83_FR_46558 83 FR 46380 - Airworthiness Directives; The Boeing Company Airplanes

83 FR 46380 - Airworthiness Directives; The Boeing Company Airplanes

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration

Federal Register Volume 83, Issue 178 (September 13, 2018)

Page Range46380-46384
FR Document2018-19185

We are adopting a new airworthiness directive (AD) for all The Boeing Company Model 737-100, -200, -200C, -300, -400, and -500 series airplanes. This AD was prompted by reports of cracking in certain flanges, and the adjacent web, of the wing outboard flap track at certain positions, and a determination that new inspections of certain flap track flanges and webs forward of the rear spar attachment are necessary. This AD requires an inspection to determine the part number of the wing outboard flap track assembly; repetitive inspections of each affected wing outboard flap track for discrepancies, and applicable on-condition actions; and repetitive overhaul of each wing outboard flap track. We are issuing this AD to address the unsafe condition on these products.

Federal Register, Volume 83 Issue 178 (Thursday, September 13, 2018)
[Federal Register Volume 83, Number 178 (Thursday, September 13, 2018)]
[Rules and Regulations]
[Pages 46380-46384]
From the Federal Register Online  [www.thefederalregister.org]
[FR Doc No: 2018-19185]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2018-0112; Product Identifier 2017-NM-161-AD; Amendment 
39-19392; AD 2018-18-13]
RIN 2120-AA64


Airworthiness Directives; The Boeing Company Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

-----------------------------------------------------------------------

SUMMARY: We are adopting a new airworthiness directive (AD) for all The 
Boeing Company Model 737-100, -200, -200C, -300, -400, and -500 series 
airplanes. This AD was prompted by reports of cracking in certain 
flanges, and the adjacent web, of the wing outboard flap track at 
certain positions, and a determination that new inspections of certain 
flap track flanges and webs forward of the rear spar attachment are 
necessary. This AD requires an inspection to determine the part number 
of the wing outboard flap track assembly; repetitive inspections of 
each affected wing outboard flap track for discrepancies, and 
applicable on-condition actions; and repetitive overhaul of each wing 
outboard flap track. We are issuing this AD to address the unsafe 
condition on these products.

DATES: This AD is effective October 18, 2018.
    The Director of the Federal Register approved the incorporation by 
reference of a certain publication listed in this AD as of October 18, 
2018.

ADDRESSES: For service information identified in this final rule, 
contact Boeing Commercial Airplanes, Attention: Contractual & Data 
Services (C&DS), 2600 Westminster Blvd., MC 110-SK57, Seal Beach, CA 
90740-5600; telephone 562-797-1717; internet https://www.myboeingfleet.com. You may view this referenced service information 
at the FAA, Transport Standards Branch, 2200 South 216th St., Des 
Moines, WA. For information on the availability of this material at the 
FAA, call 206-231-3195. It is also available on the internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2018-
0112.

Examining the AD Docket

    You may examine the AD docket on the internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2018-
0112; or in person at Docket Operations between 9 a.m. and 5 p.m., 
Monday through Friday, except Federal holidays. The AD docket contains 
this final rule, the regulatory evaluation, any comments received, and 
other information. The address for Docket Operations (phone: 800-647-
5527) is Docket Operations, U.S. Department of Transportation, Docket 
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New 
Jersey Avenue SE, Washington, DC 20590.

FOR FURTHER INFORMATION CONTACT: Payman Soltani, Aerospace Engineer, 
Airframe Section, FAA, Los Angeles ACO Branch, 3960 Paramount 
Boulevard, Lakewood, CA 90712-4137; phone: 562-627-5313; fax: 562-627-
5210; email: [email protected].

SUPPLEMENTARY INFORMATION:

Discussion

    We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR 
part 39 by adding an AD that would apply to all The Boeing Company 
Model

[[Page 46381]]

737-100, -200, -200C, -300, -400, and -500 series airplanes. The NPRM 
published in the Federal Register on February 21, 2018 (83 FR 7425). 
The NPRM was prompted by reports of cracking in certain flanges, and 
the adjacent web, of the wing outboard flap track at certain positions, 
and a determination that new inspections of certain flap track flanges 
and webs forward of the rear spar attachment are necessary. The NPRM 
proposed to require an inspection to determine the part number of the 
wing outboard flap track assembly; repetitive inspections of each 
affected wing outboard flap track for discrepancies, and applicable on-
condition actions; and repetitive overhaul of each wing outboard flap 
track.
    We are issuing this AD to detect and correct cracking of the wing 
outboard flap tracks. Cracking in the area between the forward and rear 
spar attachments of the wing outboard flap tracks could lead to the 
inability of a principal structural element to sustain required flight 
loads, and result in loss of the outboard trailing edge flap and 
consequent reduced controllability of the airplane.

Comments

    We gave the public the opportunity to participate in developing 
this final rule. The following presents the comments received on the 
NPRM and the FAA's response to each comment.

Request To Extend the Compliance Time

    All Nippon Airways (ANA) and Utair Aviation requested that 
paragraph (h) of the proposed AD be revised to extend the compliance 
time from 6 months to 18 months after the effective date of the final 
rule. The commenters are concerned that there are not enough spare flap 
track parts available. The commenters indicated that overhaul of the 
removed flap tracks takes significant time, and if the final rule is 
released without a sufficient number of spare flap tracks available, 
there could be a long-term aircraft on ground (AOG) situation if the 
proposed compliance times are used.
    Furthermore, Utair Aviation stated that a review of maintenance 
records on 38 airplanes for flap tracks at positions 1 and 8 did not 
find any records of inspections or overhaul, and it would not be able 
to replace the subject flap tracks within the compliance time specified 
in the proposed AD. Utair Aviation also noted that it took 60 days, 
including shipping, to replace the outboard flap tracks for similar 
requirements specified in AD 2013-09-02, Amendment 39-17443 (78 FR 
27010, May 9, 2013).
    We do not agree with the commenters' requests. The 6-month 
compliance time for inspection and overhaul is applicable only to flap 
tracks that have unknown maintenance records and flap tracks that were 
last overhauled several years ago. Airplanes with flap tracks that have 
known maintenance records generally have later compliance times, 
depending on how long it has been since the flap tracks were 
overhauled. The NPRM was issued to address findings of stress corrosion 
cracking in the flap tracks. Stress corrosion cracking is more likely 
to occur in flap tracks that have been in operation for a longer time. 
Flap tracks with unknown maintenance records and flap tracks that were 
last overhauled several years ago are more susceptible to the unsafe 
condition. The probability of the existence of stress corrosion 
cracking on flap tracks with unknown maintenance history is higher and 
warrants the shorter compliance time. We have verified that spare flap 
tracks are available on the parts surplus market; however, since we do 
not know how many flap tracks have unknown maintenance records, it is 
difficult to estimate how many spare flap tracks will be necessary to 
meet the demand. If there is a critical shortage of parts, operators 
may contact the FAA and request an adjustment to the compliance time 
using the procedures specified in paragraph (l) of this AD. We might 
approve a longer compliance time if additional data are presented that 
would justify an extension to the compliance time while still 
maintaining an adequate level of safety.
    We urge operators to seek out maintenance records for their flap 
tracks in order to justify use of the extended compliance times 
specified in Boeing Alert Requirements Bulletin 737-57A1338 RB, dated 
September 25, 2017. We cannot justify extending the compliance times 
for flap tracks without maintenance records to 18 months. We have not 
changed this AD in regard to this issue.

Request To Omit Inspection 1 in the Service Information

    Utair Aviation stated that it is inadvisable to require operators 
to do the inspections included in ``INSPECTION 1,'' as defined in 
Boeing Alert Requirements Bulletin 737-57A1338 RB, dated September 25, 
2017. The commenter noted that ``ACTION 1'' in Table 1 and Table 2 of 
paragraph 3, ``Compliance,'' of Boeing Alert Requirements Bulletin 737-
57A1338 RB, dated September 25, 2017, states that operators need to do 
INSPECTION 1. The commenter suggested that ``ACTION 2,'' overhaul of 
each affected flap track, would already include all of the inspections 
included in INSPECTION 1.
    We infer that the commenter is requesting that the proposed 
requirement to do the inspections included in INSPECTION 1 of the 
specified service bulletin be removed from the proposed AD. We do not 
agree with the commenter's request. ACTION 1 and ACTION 2 have 
different purposes. The inspections included in ACTION 1 are intended 
to detect specific existing damage on the flap track, including cracks, 
nicks, corrosion, galling, broken pieces, and stop drills. The 
intention of ACTION 2, overhaul of each affected flap track, is a 
visual examination for defects. The intent of this visual examination 
during overhaul is to identify additional discrepancies, such as 
excessive wear or degraded surface finish, that might not be noted 
during INSPECTION 1. It is important to detect these additional 
discrepancies since they can be early indicators of stress corrosion 
cracking. Since the inspections to detect specific existing damage on 
the flap track are not included in the overhaul instructions, it is 
necessary to require both ACTION 1 and ACTION 2 in this AD. We have not 
changed this AD in regard to this issue.

Request for Alternative To Overhaul

    ANA requested that an alternative to overhaul of the flap tracks be 
provided that does not involve removing the flap tracks from the wing. 
The commenter suggested that an on-wing inspection could be used 
instead of the overhaul. The commenter is concerned that there is not a 
sufficient supply of spare flap track parts.
    We do not agree with the commenter's request. There is no on-wing 
inspection method available that can detect the additional 
discrepancies that overhaul of the flap tracks is designed to address. 
The concern regarding availability of spare flap track parts was 
addressed in the response to an earlier comment. We have not changed 
this AD in regard to this issue.

Request To Revise Parts Installation Limitation Paragraph

    Boeing requested that the Parts Installation Limitation Paragraph, 
paragraph (k) in the proposed AD, be revised to allow flap tracks to be 
installed and inspected at the time of installation. Boeing noted that 
paragraph (k) states ``. . . no person may install a flap track unless 
the flap track is inspected prior to installation.'' Boeing pointed out 
that there are several

[[Page 46382]]

inspections that pertain to the track-to-wing joint, which cannot be 
accomplished until after the flap track is installed.
    We agree with the commenter's request for the reasons provided by 
the commenter. We have revised paragraph (k) of this AD to state ``As 
of the effective date of this AD, no person may install, on any 
airplane, a wing outboard flap track having a part number listed in 
paragraph 1.B. of Boeing Alert Requirements Bulletin 737-57A1338 RB, 
dated September 25, 2017, unless the inspections . . . are accomplished 
prior to or concurrently with the part's installation on the 
airplane.''

Effect of Winglets on Accomplishment of the Proposed Actions

    Aviation Partners Boeing stated that accomplishing the installation 
of winglets using Supplemental Type Certificate (STC) ST01219SE does 
not affect compliance with the actions proposed in the NPRM.
    We concur with the commenter. We have redesignated paragraph (c) of 
the proposed AD as paragraph (c)(1) of this AD and added paragraph 
(c)(2) to this AD to state that installation of STC ST01219SE does not 
affect the ability to accomplish the actions required by this AD. 
Therefore, for airplanes on which STC ST01219SE is installed, a 
``change in product'' alternative method of compliance (AMOC) approval 
request is not necessary to comply with the requirements of 14 CFR 
39.17.

Additional Change to This AD

    The proposed AD included Note 1 to paragraph (h), which stated that 
guidance for accomplishing the proposed actions could be found in 
Boeing Alert Service Bulletin 737-57A1338, dated September 25, 2017, 
which is referred to in Boeing Alert Requirements Bulletin 737-57A1338 
RB, dated September 25, 2017. Since the proposed AD was published, 
Boeing has issued Boeing Information Notice 737-57A1338 IN 01, dated 
October 16, 2017; Boeing Information Notice 737-57A1338 IN 02, dated 
March 16, 2018; and Boeing Information Notice 737-57A1338 IN 03, dated 
March 20, 2018. These information notices provide additional guidance 
material related to Boeing Alert Service Bulletin 737-57A1338, dated 
September 25, 2017, including clarification of compliance times for 
spares (not AD compliance times), inspection figures, and the 
relationship between flap track part numbers and airplanes groups. We 
have revised Note 1 to paragraph (h) in this AD to include these 
information notices.

Conclusion

    We reviewed the relevant data, considered the comments received, 
and determined that air safety and the public interest require adopting 
this final rule with the changes described previously and minor 
editorial changes. We have determined that these minor changes:
     Are consistent with the intent that was proposed in the 
NPRM for addressing the unsafe condition; and
     Do not add any additional burden upon the public than was 
already proposed in the NPRM.
    We also determined that these changes will not increase the 
economic burden on any operator or increase the scope of this final 
rule.

Related Service Information Under 1 CFR Part 51

    We reviewed Boeing Alert Requirements Bulletin 737-57A1338 RB, 
dated September 25, 2017. This service information describes procedures 
for repetitive inspections and repetitive overhaul of the wing outboard 
flap tracks, and applicable on-condition actions including repair and 
replacement of the wing outboard flap tracks. This service information 
is reasonably available because the interested parties have access to 
it through their normal course of business or by the means identified 
in the ADDRESSES section.

Costs of Compliance

    We estimate that this AD affects 160 airplanes of U.S. registry. We 
estimate the following costs to comply with this AD:

                                                          Estimated Costs for Required Actions
--------------------------------------------------------------------------------------------------------------------------------------------------------
               Action                      Labor cost          Parts cost             Cost per product                   Cost on U.S. operators
--------------------------------------------------------------------------------------------------------------------------------------------------------
Inspection (positions 1 and 8;       78 work-hours x $85                 $0  $6,630 per cycle.................  $1,060,800 per cycle.
 Group 2 and Group 3, configuration   per hour = $6,630 per
 1).                                  cycle.
Inspection (positions 1 and 8;       89 work-hours x $85                  0  7,565 per cycle..................  1,210,400 per cycle.
 Group 3, configuration 2).           per hour = $7,565 per
                                      cycle.
Inspection (positions 2 and 7;       83 work-hours x $85                  0  7,055 per cycle..................  1,128,800 per cycle.
 Group 2 and Group 3, configuration   per hour = $7,055 per
 1).                                  cycle.
Inspection (positions 2 and 7;       86 work-hours x $85                  0  7,310 per cycle..................  1,169,600 per cycle.
 Group 3, configuration 2).           per hour = $7,310 per
                                      cycle.
--------------------------------------------------------------------------------------------------------------------------------------------------------

    We have received no definitive data that will enable us to provide 
cost estimates for the actions for Group 1 airplanes, the repetitive 
overhaul, or the on-condition actions specified in this AD.

Authority for This Rulemaking

    Title 49 of the United States Code specifies the FAA's authority to 
issue rules on aviation safety. Subtitle I, section 106, describes the 
authority of the FAA Administrator. Subtitle VII: Aviation Programs, 
describes in more detail the scope of the Agency's authority.
    We are issuing this rulemaking under the authority described in 
Subtitle VII, Part A, Subpart III, Section 44701: ``General 
requirements.'' Under that section, Congress charges the FAA with 
promoting safe flight of civil aircraft in air commerce by prescribing 
regulations for practices, methods, and procedures the Administrator 
finds necessary for safety in air commerce. This regulation is within 
the scope of that authority because it addresses an unsafe condition 
that is likely to exist or develop on products identified in this 
rulemaking action.
    This AD is issued in accordance with authority delegated by the 
Executive Director, Aircraft Certification Service, as authorized by 
FAA Order 8000.51C. In accordance with that order, issuance of ADs is 
normally a function of the Compliance and Airworthiness Division, but 
during this transition period, the Executive Director has delegated the 
authority to issue ADs applicable to transport category airplanes and 
associated appliances to

[[Page 46383]]

the Director of the System Oversight Division.

Regulatory Findings

    This AD will not have federalism implications under Executive Order 
13132. This AD will not have a substantial direct effect on the States, 
on the relationship between the national government and the States, or 
on the distribution of power and responsibilities among the various 
levels of government.
    For the reasons discussed above, I certify that this AD:
    (1) Is not a ``significant regulatory action'' under Executive 
Order 12866,
    (2) Is not a ``significant rule'' under DOT Regulatory Policies and 
Procedures (44 FR 11034, February 26, 1979),
    (3) Will not affect intrastate aviation in Alaska, and
    (4) Will not have a significant economic impact, positive or 
negative, on a substantial number of small entities under the criteria 
of the Regulatory Flexibility Act.

List of Subjects in 14 CFR Part 39

    Air transportation, Aircraft, Aviation safety, Incorporation by 
reference, Safety.

Adoption of the Amendment

    Accordingly, under the authority delegated to me by the 
Administrator, the FAA amends 14 CFR part 39 as follows:

PART 39--AIRWORTHINESS DIRECTIVES

0
1. The authority citation for part 39 continues to read as follows:

    Authority:  49 U.S.C. 106(g), 40113, 44701.


Sec.  39.13 [Amended]  

0
2. The FAA amends Sec.  39.13 by adding the following new airworthiness 
directive (AD):

2018-18-13 The Boeing Company: Amendment 39-19392; Docket No. FAA-
2018-0112; Product Identifier 2017-NM-161-AD.

 (a) Effective Date

    This AD is effective October 18, 2018.

 (b) Affected ADs

    This AD affects AD 2013-09-02, Amendment 39-17443 (78 FR 27010, 
May 9, 2013) (``AD 2013-09-02'').

 (c) Applicability

    (1) This AD applies to all The Boeing Company Model 737-100, -
200, -200C, -300, -400, and -500 series airplanes, certificated in 
any category.
    (2) Installation of Supplemental Type Certificate (STC) 
ST01219SE (http://rgl.faa.gov/Regulatory_and_Guidance_Library/
rgstc.nsf/0/ebd1cec7b301293e86257cb30045557a/$FILE/ST01219SE.pdf) 
does not affect the ability to accomplish the actions required by 
this AD. Therefore, for airplanes on which STC ST01219SE is 
installed, a ``change in product'' alternative method of compliance 
(AMOC) approval request is not necessary to comply with the 
requirements of 14 CFR 39.17.

 (d) Subject

    Air Transport Association (ATA) of America Code 57, Wings.

(e) Unsafe Condition

    This AD was prompted by reports of cracking in certain flanges, 
and the adjacent web, of the wing outboard flap track at certain 
positions, and a determination that new inspections of certain flap 
track flanges and webs forward of the rear spar attachment are 
necessary. We are issuing this AD to detect and correct cracking of 
the wing outboard flap tracks. Cracking in the area between the 
forward and rear spar attachments of the wing outboard flap tracks 
could lead to the inability of a principal structural element to 
sustain required flight loads, and result in loss of the outboard 
trailing edge flap and consequent reduced controllability of the 
airplane.

(f) Compliance

    Comply with this AD within the compliance times specified, 
unless already done.

(g) Required Actions for Group 1 Airplanes

    For airplanes identified as Group 1 in Boeing Alert Requirements 
Bulletin 737-57A1338 RB, dated September 25, 2017: Within 120 days 
after the effective date of this AD, do actions to correct the 
unsafe condition using a method approved in accordance with the 
procedures specified in paragraph (l) of this AD.

(h) Required Actions

    For airplanes not specified in paragraph (g) of this AD: Except 
as required by paragraph (i) of this AD, at the applicable times 
specified in the ``Compliance'' paragraph of Boeing Alert 
Requirements Bulletin 737-57A1338 RB, dated September 25, 2017, do 
all applicable actions identified in, and in accordance with, the 
Accomplishment Instructions of Boeing Alert Requirements Bulletin 
737-57A1338 RB, dated September 25, 2017.

    Note 1 to paragraph (h) of this AD: Guidance for accomplishing 
the actions required by this AD can be found in Boeing Alert Service 
Bulletin 737-57A1338, dated September 25, 2017, which is referred to 
in Boeing Alert Requirements Bulletin 737-57A1338 RB, dated 
September 25, 2017. Additional guidance can be found in Boeing 
Information Notice 737-57A1338 IN 01, dated October 16, 2017; Boeing 
Information Notice 737-57A1338 IN 02, dated March 16, 2018; and 
Boeing Information Notice 737-57A1338 IN 03, dated March 20, 2018.

(i) Exceptions to Service Information Specifications

    For purposes of determining compliance with the requirements of 
this AD: Where Boeing Alert Requirements Bulletin 737-57A1338 RB, 
dated September 25, 2017, uses the phrase ``the original issue date 
of Requirements Bulletin 737-57A1338 RB,'' this AD requires using 
``the effective date of this AD.''

(j) Terminating Action for Requirements of AD 2013-09-02

    Accomplishment of the requirements specified in paragraph (h) of 
this AD terminates all requirements of AD 2013-09-02.

(k) Parts Installation Limitation

    As of the effective date of this AD, no person may install, on 
any airplane, a wing outboard flap track having a part number listed 
in paragraph 1.B. of Boeing Alert Requirements Bulletin 737-57A1338 
RB, dated September 25, 2017, unless the inspections and corrective 
actions specified in the Accomplishment Instructions of Boeing Alert 
Requirements Bulletin 737-57A1338 RB, dated September 25, 2017, are 
accomplished prior to or concurrently with the part's installation 
on the airplane.

(l) Alternative Methods of Compliance (AMOCs)

    (1) The Manager, Los Angeles ACO Branch, FAA, has the authority 
to approve AMOCs for this AD, if requested using the procedures 
found in 14 CFR 39.19. In accordance with 14 CFR 39.19, send your 
request to your principal inspector or local Flight Standards 
District Office, as appropriate. If sending information directly to 
the manager of the certification office, send it to the attention of 
the person identified in paragraph (m)(1) of this AD. Information 
may be emailed to: [email protected].
    (2) Before using any approved AMOC, notify your appropriate 
principal inspector, or lacking a principal inspector, the manager 
of the local flight standards district office/certificate holding 
district office.
    (3) An AMOC that provides an acceptable level of safety may be 
used for any repair, modification, or alteration required by this AD 
if it is approved by the Boeing Commercial Airplanes Organization 
Designation Authorization (ODA) that has been authorized by the 
Manager, Los Angeles ACO Branch, to make those findings. To be 
approved, the repair method, modification deviation, or alteration 
deviation must meet the certification basis of the airplane, and the 
approval must specifically refer to this AD.

(m) Related Information

    (1) For more information about this AD, contact Payman Soltani, 
Aerospace Engineer, Airframe Section, FAA, Los Angeles ACO Branch, 
3960 Paramount Boulevard, Lakewood, CA 90712 4137; phone: 562-627-
5313; fax: 562-627-5210; email: [email protected].
    (2) Service information identified in this AD that is not 
incorporated by reference is available at the addresses specified in 
paragraphs (n)(3) and (n)(4) of this AD.

(n) Material Incorporated by Reference

    (1) The Director of the Federal Register approved the 
incorporation by reference (IBR) of the service information listed 
in this

[[Page 46384]]

paragraph under 5 U.S.C. 552(a) and 1 CFR part 51.
    (2) You must use this service information as applicable to do 
the actions required by this AD, unless the AD specifies otherwise.
    (i) Boeing Alert Requirements Bulletin 737-57A1338 RB, dated 
September 25, 2017.
    (ii) Reserved.
    (3) For service information identified in this AD, contact 
Boeing Commercial Airplanes, Attention: Contractual & Data Services 
(C&DS), 2600 Westminster Blvd., MC 110-SK57, Seal Beach, CA 90740 
5600; telephone 562-797-1717; internet https://www.myboeingfleet.com.
    (4) You may view this service information at the FAA, Transport 
Standards Branch, 2200 South 216th St., Des Moines, WA. For 
information on the availability of this material at the FAA, call 
206-231-3195.
    (5) You may view this service information that is incorporated 
by reference at the National Archives and Records Administration 
(NARA). For information on the availability of this material at 
NARA, call 202-741-6030, or go to: http://www.archives.gov/federal-register/cfr/ibr-locations.html.

    Issued in Des Moines, Washington, on August 24, 2018.
James Cashdollar,
Acting Director, System Oversight Division, Aircraft Certification 
Service.
[FR Doc. 2018-19185 Filed 9-12-18; 8:45 am]
 BILLING CODE 4910-13-P



                                             46380            Federal Register / Vol. 83, No. 178 / Thursday, September 13, 2018 / Rules and Regulations

                                             the single stitched de-icing boots installed on             (3) The following service information was          and webs forward of the rear spar
                                             the left-hand (LH) and right-hand (RH)                   approved for IBR on October 18, 2018.                 attachment are necessary. This AD
                                             horizontal stabilizers with double stitched                 (i) Saab Service Bulletin 340–30–095,              requires an inspection to determine the
                                             de-icing boots and re-identify the LH and RH             dated April 3, 2017.
                                                                                                                                                            part number of the wing outboard flap
                                             horizontal stabilizer leading edge, in                      (ii) Reserved.
                                             accordance with the Accomplishment                          (4) The following service information was          track assembly; repetitive inspections of
                                             Instructions of Saab Service Bulletin 340–30–            approved for IBR on August 1, 2016 (81 FR             each affected wing outboard flap track
                                             095, dated April 3, 2017.                                41432, June 27, 2016).                                for discrepancies, and applicable on-
                                                                                                         (i) Saab Service Bulletin 340–30–094,              condition actions; and repetitive
                                             (j) Terminating Action for the Requirements              dated March 27, 2015.                                 overhaul of each wing outboard flap
                                             of Paragraph (h) of this AD                                 (ii) Saab AFM 340A 001, Revision 57,               track. We are issuing this AD to address
                                               Modification of an airplane as required by             dated March 27, 2015.                                 the unsafe condition on these products.
                                             paragraph (i) of this AD, constitutes                       (iii) Saab AFM 340B 001, Revision 35,
                                                                                                                                                            DATES: This AD is effective October 18,
                                             terminating action for the repetitive                    dated March 27, 2015.
                                             inspections required by paragraph (h) of this               (iv) Saab AFM 340B 010, Revision 28,               2018.
                                             AD, for that airplane.                                   dated March 27, 2015.                                    The Director of the Federal Register
                                                                                                         (5) For service information identified in          approved the incorporation by reference
                                             (k) Other FAA AD Provisions                              this AD, contact Saab AB, Saab Aeronautics,           of a certain publication listed in this AD
                                                The following provisions also apply to this           SE–581 88, Linköping, Sweden; phone: +46             as of October 18, 2018.
                                             AD:                                                      13 18 5591; fax: +46 13 18 4874; email:               ADDRESSES: For service information
                                                (1) Alternative Methods of Compliance                 saab340techsupport@saabgroup.com;                     identified in this final rule, contact
                                             (AMOCs): The Manager, International                      internet: http://www.saabgroup.com.
                                                                                                                                                            Boeing Commercial Airplanes,
                                             Section, Transport Standards Branch, FAA,                   (6) You may view this service information
                                             has the authority to approve AMOCs for this              at the FAA, Transport Standards Branch,               Attention: Contractual & Data Services
                                             AD, if requested using the procedures found              2200 South 216th St., Des Moines, WA. For             (C&DS), 2600 Westminster Blvd., MC
                                             in 14 CFR 39.19. In accordance with 14 CFR               information on the availability of this               110–SK57, Seal Beach, CA 90740–5600;
                                             39.19, send your request to your principal               material at the FAA, call 206–231–3195.               telephone 562–797–1717; internet
                                             inspector or local Flight Standards District                (7) You may view this service information          https://www.myboeingfleet.com. You
                                             Office, as appropriate. If sending information           that is incorporated by reference at the              may view this referenced service
                                             directly to the International Section, send it           National Archives and Records                         information at the FAA, Transport
                                             to the attention of the person identified in             Administration (NARA). For information on             Standards Branch, 2200 South 216th St.,
                                             paragraph (l)(2) of this AD. Information may             the availability of this material at NARA, call
                                                                                                                                                            Des Moines, WA. For information on the
                                             be emailed to: 9-ANM-116-AMOC-                           202–741–6030, or go to: http://
                                             REQUESTS@faa.gov. Before using any                       www.archives.gov/federal-register/cfr/ibr-            availability of this material at the FAA,
                                             approved AMOC, notify your appropriate                   locations.html.                                       call 206–231–3195. It is also available
                                             principal inspector, or lacking a principal                                                                    on the internet at http://
                                             inspector, the manager of the local flight                 Issued in Des Moines, Washington, on                www.regulations.gov by searching for
                                             standards district office/certificate holding            August 23, 2018.                                      and locating Docket No. FAA–2018–
                                             district office.                                         James Cashdollar,                                     0112.
                                                (2) Contacting the Manufacturer: As of the            Acting Director, System Oversight Division,
                                             effective date of this AD, for any requirement                                                                 Examining the AD Docket
                                                                                                      Aircraft Certification Service.
                                             in this AD to obtain corrective actions from                                                                     You may examine the AD docket on
                                                                                                      [FR Doc. 2018–19748 Filed 9–12–18; 8:45 am]
                                             a manufacturer, the action must be                                                                             the internet at http://
                                             accomplished using a method approved by                  BILLING CODE 4910–13–P
                                             the Manager, International Section, Transport
                                                                                                                                                            www.regulations.gov by searching for
                                             Standards Branch, FAA; or the European                                                                         and locating Docket No. FAA–2018–
                                             Aviation Safety Agency (EASA); or Saab AB,               DEPARTMENT OF TRANSPORTATION                          0112; or in person at Docket Operations
                                             Saab Aeronautics’ EASA Design Organization                                                                     between 9 a.m. and 5 p.m., Monday
                                             Approval (DOA). If approved by the DOA,                  Federal Aviation Administration                       through Friday, except Federal holidays.
                                             the approval must include the DOA-                                                                             The AD docket contains this final rule,
                                             authorized signature                                     14 CFR Part 39                                        the regulatory evaluation, any
                                             (l) Related Information                                                                                        comments received, and other
                                                                                                      [Docket No. FAA–2018–0112; Product
                                                (1) Refer to Mandatory Continuing                     Identifier 2017–NM–161–AD; Amendment                  information. The address for Docket
                                             Airworthiness Information (MCAI) EASA AD                 39–19392; AD 2018–18–13]                              Operations (phone: 800–647–5527) is
                                             2017–0144, dated August 9, 2017, for related                                                                   Docket Operations, U.S. Department of
                                             information. This MCAI may be found in the               RIN 2120–AA64                                         Transportation, Docket Operations, M–
                                             AD docket on the internet at http://                                                                           30, West Building Ground Floor, Room
                                             www.regulations.gov by searching for and                 Airworthiness Directives; The Boeing                  W12–140, 1200 New Jersey Avenue SE,
                                             locating Docket No. FAA–2018–0271.                       Company Airplanes                                     Washington, DC 20590.
                                                (2) For more information about this AD,
                                                                                                      AGENCY:  Federal Aviation                             FOR FURTHER INFORMATION CONTACT:
                                             contact Shahram Daneshmandi, Aerospace
                                             Engineer, International Section, Transport               Administration (FAA), DOT.                            Payman Soltani, Aerospace Engineer,
                                             Standards Branch, FAA, 2200 South 216th                  ACTION: Final rule.                                   Airframe Section, FAA, Los Angeles
                                             St., Des Moines, WA 98198; phone and fax:                                                                      ACO Branch, 3960 Paramount
                                             206–231–3220.                                            SUMMARY:   We are adopting a new                      Boulevard, Lakewood, CA 90712–4137;
                                                                                                      airworthiness directive (AD) for all The              phone: 562–627–5313; fax: 562–627–
                                             (m) Material Incorporated by Reference
                                                                                                      Boeing Company Model 737–100, –200,                   5210; email: payman.soltani@faa.gov.
                                                (1) The Director of the Federal Register              –200C, –300, –400, and –500 series
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                                                                                                                                                            SUPPLEMENTARY INFORMATION:
                                             approved the incorporation by reference
                                                                                                      airplanes. This AD was prompted by
                                             (IBR) of the service information listed in this                                                                Discussion
                                             paragraph under 5 U.S.C. 552(a) and 1 CFR                reports of cracking in certain flanges,
                                             part 51.                                                 and the adjacent web, of the wing                       We issued a notice of proposed
                                                (2) You must use this service information             outboard flap track at certain positions,             rulemaking (NPRM) to amend 14 CFR
                                             as applicable to do the actions required by              and a determination that new                          part 39 by adding an AD that would
                                             this AD, unless this AD specifies otherwise.             inspections of certain flap track flanges             apply to all The Boeing Company Model


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                                                              Federal Register / Vol. 83, No. 178 / Thursday, September 13, 2018 / Rules and Regulations                                       46381

                                             737–100, –200, –200C, –300, –400, and                    02, Amendment 39–17443 (78 FR                         1. The commenter suggested that
                                             –500 series airplanes. The NPRM                          27010, May 9, 2013).                                  ‘‘ACTION 2,’’ overhaul of each affected
                                             published in the Federal Register on                        We do not agree with the commenters’               flap track, would already include all of
                                             February 21, 2018 (83 FR 7425). The                      requests. The 6-month compliance time                 the inspections included in
                                             NPRM was prompted by reports of                          for inspection and overhaul is                        INSPECTION 1.
                                             cracking in certain flanges, and the                     applicable only to flap tracks that have                 We infer that the commenter is
                                             adjacent web, of the wing outboard flap                  unknown maintenance records and flap                  requesting that the proposed
                                             track at certain positions, and a                        tracks that were last overhauled several              requirement to do the inspections
                                             determination that new inspections of                    years ago. Airplanes with flap tracks                 included in INSPECTION 1 of the
                                             certain flap track flanges and webs                      that have known maintenance records                   specified service bulletin be removed
                                             forward of the rear spar attachment are                  generally have later compliance times,                from the proposed AD. We do not agree
                                             necessary. The NPRM proposed to                          depending on how long it has been                     with the commenter’s request. ACTION
                                             require an inspection to determine the                   since the flap tracks were overhauled.                1 and ACTION 2 have different
                                             part number of the wing outboard flap                    The NPRM was issued to address                        purposes. The inspections included in
                                             track assembly; repetitive inspections of                findings of stress corrosion cracking in              ACTION 1 are intended to detect
                                             each affected wing outboard flap track                   the flap tracks. Stress corrosion cracking            specific existing damage on the flap
                                             for discrepancies, and applicable on-                    is more likely to occur in flap tracks that           track, including cracks, nicks, corrosion,
                                             condition actions; and repetitive                        have been in operation for a longer time.             galling, broken pieces, and stop drills.
                                             overhaul of each wing outboard flap                      Flap tracks with unknown maintenance                  The intention of ACTION 2, overhaul of
                                             track.                                                   records and flap tracks that were last                each affected flap track, is a visual
                                                We are issuing this AD to detect and                  overhauled several years ago are more                 examination for defects. The intent of
                                             correct cracking of the wing outboard                    susceptible to the unsafe condition. The              this visual examination during overhaul
                                             flap tracks. Cracking in the area between                probability of the existence of stress                is to identify additional discrepancies,
                                             the forward and rear spar attachments of                 corrosion cracking on flap tracks with                such as excessive wear or degraded
                                             the wing outboard flap tracks could lead                 unknown maintenance history is higher                 surface finish, that might not be noted
                                             to the inability of a principal structural               and warrants the shorter compliance                   during INSPECTION 1. It is important to
                                             element to sustain required flight loads,                time. We have verified that spare flap                detect these additional discrepancies
                                             and result in loss of the outboard                       tracks are available on the parts surplus             since they can be early indicators of
                                                                                                      market; however, since we do not know                 stress corrosion cracking. Since the
                                             trailing edge flap and consequent
                                                                                                      how many flap tracks have unknown                     inspections to detect specific existing
                                             reduced controllability of the airplane.
                                                                                                      maintenance records, it is difficult to               damage on the flap track are not
                                             Comments                                                 estimate how many spare flap tracks                   included in the overhaul instructions, it
                                                                                                      will be necessary to meet the demand.                 is necessary to require both ACTION 1
                                               We gave the public the opportunity to
                                                                                                      If there is a critical shortage of parts,             and ACTION 2 in this AD. We have not
                                             participate in developing this final rule.
                                                                                                      operators may contact the FAA and                     changed this AD in regard to this issue.
                                             The following presents the comments
                                                                                                      request an adjustment to the compliance
                                             received on the NPRM and the FAA’s                                                                             Request for Alternative To Overhaul
                                                                                                      time using the procedures specified in
                                             response to each comment.                                                                                         ANA requested that an alternative to
                                                                                                      paragraph (l) of this AD. We might
                                             Request To Extend the Compliance                         approve a longer compliance time if                   overhaul of the flap tracks be provided
                                             Time                                                     additional data are presented that would              that does not involve removing the flap
                                                                                                      justify an extension to the compliance                tracks from the wing. The commenter
                                                All Nippon Airways (ANA) and Utair                    time while still maintaining an adequate              suggested that an on-wing inspection
                                             Aviation requested that paragraph (h) of                 level of safety.                                      could be used instead of the overhaul.
                                             the proposed AD be revised to extend                        We urge operators to seek out                      The commenter is concerned that there
                                             the compliance time from 6 months to                     maintenance records for their flap tracks             is not a sufficient supply of spare flap
                                             18 months after the effective date of the                in order to justify use of the extended               track parts.
                                             final rule. The commenters are                           compliance times specified in Boeing                     We do not agree with the commenter’s
                                             concerned that there are not enough                      Alert Requirements Bulletin 737–                      request. There is no on-wing inspection
                                             spare flap track parts available. The                    57A1338 RB, dated September 25, 2017.                 method available that can detect the
                                             commenters indicated that overhaul of                    We cannot justify extending the                       additional discrepancies that overhaul
                                             the removed flap tracks takes significant                compliance times for flap tracks without              of the flap tracks is designed to address.
                                             time, and if the final rule is released                  maintenance records to 18 months. We                  The concern regarding availability of
                                             without a sufficient number of spare                     have not changed this AD in regard to                 spare flap track parts was addressed in
                                             flap tracks available, there could be a                  this issue.                                           the response to an earlier comment. We
                                             long-term aircraft on ground (AOG)                                                                             have not changed this AD in regard to
                                             situation if the proposed compliance                     Request To Omit Inspection 1 in the
                                                                                                                                                            this issue.
                                             times are used.                                          Service Information
                                                Furthermore, Utair Aviation stated                       Utair Aviation stated that it is                   Request To Revise Parts Installation
                                             that a review of maintenance records on                  inadvisable to require operators to do                Limitation Paragraph
                                             38 airplanes for flap tracks at positions                the inspections included in                              Boeing requested that the Parts
                                             1 and 8 did not find any records of                      ‘‘INSPECTION 1,’’ as defined in Boeing                Installation Limitation Paragraph,
                                             inspections or overhaul, and it would                    Alert Requirements Bulletin 737–                      paragraph (k) in the proposed AD, be
                                             not be able to replace the subject flap                  57A1338 RB, dated September 25, 2017.                 revised to allow flap tracks to be
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                                             tracks within the compliance time                        The commenter noted that ‘‘ACTION 1’’                 installed and inspected at the time of
                                             specified in the proposed AD. Utair                      in Table 1 and Table 2 of paragraph 3,                installation. Boeing noted that
                                             Aviation also noted that it took 60 days,                ‘‘Compliance,’’ of Boeing Alert                       paragraph (k) states ‘‘. . . no person
                                             including shipping, to replace the                       Requirements Bulletin 737–57A1338                     may install a flap track unless the flap
                                             outboard flap tracks for similar                         RB, dated September 25, 2017, states                  track is inspected prior to installation.’’
                                             requirements specified in AD 2013–09–                    that operators need to do INSPECTION                  Boeing pointed out that there are several


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                                             46382            Federal Register / Vol. 83, No. 178 / Thursday, September 13, 2018 / Rules and Regulations

                                             inspections that pertain to the track-to-                not necessary to comply with the                        previously and minor editorial changes.
                                             wing joint, which cannot be                              requirements of 14 CFR 39.17.                           We have determined that these minor
                                             accomplished until after the flap track is                                                                       changes:
                                                                                                      Additional Change to This AD
                                             installed.                                                                                                         • Are consistent with the intent that
                                                We agree with the commenter’s                            The proposed AD included Note 1 to                   was proposed in the NPRM for
                                             request for the reasons provided by the                  paragraph (h), which stated that                        addressing the unsafe condition; and
                                             commenter. We have revised paragraph                     guidance for accomplishing the                            • Do not add any additional burden
                                             (k) of this AD to state ‘‘As of the                      proposed actions could be found in
                                                                                                                                                              upon the public than was already
                                             effective date of this AD, no person may                 Boeing Alert Service Bulletin 737–
                                                                                                                                                              proposed in the NPRM.
                                             install, on any airplane, a wing outboard                57A1338, dated September 25, 2017,
                                                                                                      which is referred to in Boeing Alert                      We also determined that these
                                             flap track having a part number listed in                                                                        changes will not increase the economic
                                             paragraph 1.B. of Boeing Alert                           Requirements Bulletin 737–57A1338
                                                                                                      RB, dated September 25, 2017. Since the                 burden on any operator or increase the
                                             Requirements Bulletin 737–57A1338                                                                                scope of this final rule.
                                                                                                      proposed AD was published, Boeing has
                                             RB, dated September 25, 2017, unless
                                                                                                      issued Boeing Information Notice 737–                   Related Service Information Under 1
                                             the inspections . . . are accomplished
                                                                                                      57A1338 IN 01, dated October 16, 2017;                  CFR Part 51
                                             prior to or concurrently with the part’s
                                                                                                      Boeing Information Notice 737–
                                             installation on the airplane.’’                                                                                     We reviewed Boeing Alert
                                                                                                      57A1338 IN 02, dated March 16, 2018;
                                             Effect of Winglets on Accomplishment                     and Boeing Information Notice 737–                      Requirements Bulletin 737–57A1338
                                             of the Proposed Actions                                  57A1338 IN 03, dated March 20, 2018.                    RB, dated September 25, 2017. This
                                                                                                      These information notices provide                       service information describes
                                                Aviation Partners Boeing stated that                  additional guidance material related to                 procedures for repetitive inspections
                                             accomplishing the installation of                        Boeing Alert Service Bulletin 737–                      and repetitive overhaul of the wing
                                             winglets using Supplemental Type                         57A1338, dated September 25, 2017,                      outboard flap tracks, and applicable on-
                                             Certificate (STC) ST01219SE does not                     including clarification of compliance                   condition actions including repair and
                                             affect compliance with the actions                       times for spares (not AD compliance                     replacement of the wing outboard flap
                                             proposed in the NPRM.                                    times), inspection figures, and the                     tracks. This service information is
                                                We concur with the commenter. We                      relationship between flap track part                    reasonably available because the
                                             have redesignated paragraph (c) of the                   numbers and airplanes groups. We have                   interested parties have access to it
                                             proposed AD as paragraph (c)(1) of this                  revised Note 1 to paragraph (h) in this                 through their normal course of business
                                             AD and added paragraph (c)(2) to this                    AD to include these information notices.                or by the means identified in the
                                             AD to state that installation of STC                                                                             ADDRESSES section.
                                             ST01219SE does not affect the ability to                 Conclusion
                                                                                                                                                              Costs of Compliance
                                             accomplish the actions required by this                     We reviewed the relevant data,
                                             AD. Therefore, for airplanes on which                    considered the comments received, and                     We estimate that this AD affects 160
                                             STC ST01219SE is installed, a ‘‘change                   determined that air safety and the                      airplanes of U.S. registry. We estimate
                                             in product’’ alternative method of                       public interest require adopting this                   the following costs to comply with this
                                             compliance (AMOC) approval request is                    final rule with the changes described                   AD:
                                                                                                   ESTIMATED COSTS FOR REQUIRED ACTIONS
                                                              Action                                   Labor cost                     Parts cost           Cost per product            Cost on U.S. operators

                                             Inspection (positions 1 and 8;              78 work-hours × $85 per hour =                            $0   $6,630 per cycle ........    $1,060,800 per cycle.
                                               Group 2 and Group 3, configura-             $6,630 per cycle.
                                               tion 1).
                                             Inspection (positions 1 and 8;              89 work-hours × $85 per hour =                            0    7,565 per cycle ..........   1,210,400 per cycle.
                                               Group 3, configuration 2).                  $7,565 per cycle.
                                             Inspection (positions 2 and 7;              83 work-hours × $85 per hour =                            0    7,055 per cycle ..........   1,128,800 per cycle.
                                               Group 2 and Group 3, configura-             $7,055 per cycle.
                                               tion 1).
                                             Inspection (positions 2 and 7;              86 work-hours × $85 per hour =                            0    7,310 per cycle ..........   1,169,600 per cycle.
                                               Group 3, configuration 2).                  $7,310 per cycle.



                                               We have received no definitive data                    detail the scope of the Agency’s                        products identified in this rulemaking
                                             that will enable us to provide cost                      authority.                                              action.
                                             estimates for the actions for Group 1                       We are issuing this rulemaking under                   This AD is issued in accordance with
                                             airplanes, the repetitive overhaul, or the               the authority described in Subtitle VII,                authority delegated by the Executive
                                             on-condition actions specified in this                   Part A, Subpart III, Section 44701:                     Director, Aircraft Certification Service,
                                             AD.                                                      ‘‘General requirements.’’ Under that                    as authorized by FAA Order 8000.51C.
                                                                                                      section, Congress charges the FAA with
                                             Authority for This Rulemaking                                                                                    In accordance with that order, issuance
                                                                                                      promoting safe flight of civil aircraft in
                                                                                                                                                              of ADs is normally a function of the
                                                                                                      air commerce by prescribing regulations
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                                               Title 49 of the United States Code                                                                             Compliance and Airworthiness
                                                                                                      for practices, methods, and procedures
                                             specifies the FAA’s authority to issue                                                                           Division, but during this transition
                                                                                                      the Administrator finds necessary for
                                             rules on aviation safety. Subtitle I,                                                                            period, the Executive Director has
                                                                                                      safety in air commerce. This regulation
                                             section 106, describes the authority of                  is within the scope of that authority                   delegated the authority to issue ADs
                                             the FAA Administrator. Subtitle VII:                     because it addresses an unsafe condition                applicable to transport category
                                             Aviation Programs, describes in more                     that is likely to exist or develop on                   airplanes and associated appliances to


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                                                              Federal Register / Vol. 83, No. 178 / Thursday, September 13, 2018 / Rules and Regulations                                            46383

                                             the Director of the System Oversight                     Library/rgstc.nsf/0/ebd1cec7b301293e86257             Boeing Alert Requirements Bulletin 737–
                                             Division.                                                cb30045557a/$FILE/ST01219SE.pdf) does                 57A1338 RB, dated September 25, 2017, uses
                                                                                                      not affect the ability to accomplish the              the phrase ‘‘the original issue date of
                                             Regulatory Findings                                      actions required by this AD. Therefore, for           Requirements Bulletin 737–57A1338 RB,’’
                                                                                                      airplanes on which STC ST01219SE is                   this AD requires using ‘‘the effective date of
                                               This AD will not have federalism                       installed, a ‘‘change in product’’ alternative        this AD.’’
                                             implications under Executive Order                       method of compliance (AMOC) approval
                                             13132. This AD will not have a                           request is not necessary to comply with the           (j) Terminating Action for Requirements of
                                             substantial direct effect on the States, on              requirements of 14 CFR 39.17.                         AD 2013–09–02
                                             the relationship between the national                                                                             Accomplishment of the requirements
                                                                                                      (d) Subject                                           specified in paragraph (h) of this AD
                                             government and the States, or on the
                                             distribution of power and                                  Air Transport Association (ATA) of                  terminates all requirements of AD 2013–09–
                                                                                                      America Code 57, Wings.                               02.
                                             responsibilities among the various
                                             levels of government.                                    (e) Unsafe Condition                                  (k) Parts Installation Limitation
                                               For the reasons discussed above, I                        This AD was prompted by reports of                    As of the effective date of this AD, no
                                             certify that this AD:                                    cracking in certain flanges, and the adjacent         person may install, on any airplane, a wing
                                               (1) Is not a ‘‘significant regulatory                  web, of the wing outboard flap track at               outboard flap track having a part number
                                             action’’ under Executive Order 12866,                    certain positions, and a determination that           listed in paragraph 1.B. of Boeing Alert
                                               (2) Is not a ‘‘significant rule’’ under                new inspections of certain flap track flanges         Requirements Bulletin 737–57A1338 RB,
                                             DOT Regulatory Policies and Procedures                   and webs forward of the rear spar attachment          dated September 25, 2017, unless the
                                                                                                      are necessary. We are issuing this AD to              inspections and corrective actions specified
                                             (44 FR 11034, February 26, 1979),                        detect and correct cracking of the wing               in the Accomplishment Instructions of
                                               (3) Will not affect intrastate aviation                outboard flap tracks. Cracking in the area            Boeing Alert Requirements Bulletin 737–
                                             in Alaska, and                                           between the forward and rear spar                     57A1338 RB, dated September 25, 2017, are
                                               (4) Will not have a significant                        attachments of the wing outboard flap tracks          accomplished prior to or concurrently with
                                             economic impact, positive or negative,                   could lead to the inability of a principal            the part’s installation on the airplane.
                                             on a substantial number of small entities                structural element to sustain required flight
                                                                                                      loads, and result in loss of the outboard             (l) Alternative Methods of Compliance
                                             under the criteria of the Regulatory
                                                                                                      trailing edge flap and consequent reduced             (AMOCs)
                                             Flexibility Act.
                                                                                                      controllability of the airplane.                         (1) The Manager, Los Angeles ACO Branch,
                                             List of Subjects in 14 CFR Part 39                       (f) Compliance                                        FAA, has the authority to approve AMOCs
                                                                                                                                                            for this AD, if requested using the procedures
                                               Air transportation, Aircraft, Aviation                    Comply with this AD within the                     found in 14 CFR 39.19. In accordance with
                                             safety, Incorporation by reference,                      compliance times specified, unless already            14 CFR 39.19, send your request to your
                                             Safety.                                                  done.                                                 principal inspector or local Flight Standards
                                             Adoption of the Amendment                                (g) Required Actions for Group 1 Airplanes            District Office, as appropriate. If sending
                                                                                                                                                            information directly to the manager of the
                                               Accordingly, under the authority                          For airplanes identified as Group 1 in             certification office, send it to the attention of
                                             delegated to me by the Administrator,                    Boeing Alert Requirements Bulletin 737–               the person identified in paragraph (m)(1) of
                                                                                                      57A1338 RB, dated September 25, 2017:                 this AD. Information may be emailed to: 9-
                                             the FAA amends 14 CFR part 39 as                         Within 120 days after the effective date of
                                             follows:                                                                                                       ANM-LAACO-AMOC-Requests@faa.gov.
                                                                                                      this AD, do actions to correct the unsafe                (2) Before using any approved AMOC,
                                                                                                      condition using a method approved in                  notify your appropriate principal inspector,
                                             PART 39—AIRWORTHINESS                                    accordance with the procedures specified in           or lacking a principal inspector, the manager
                                             DIRECTIVES                                               paragraph (l) of this AD.                             of the local flight standards district office/
                                             ■ 1. The authority citation for part 39                  (h) Required Actions                                  certificate holding district office.
                                                                                                                                                               (3) An AMOC that provides an acceptable
                                             continues to read as follows:                               For airplanes not specified in paragraph (g)       level of safety may be used for any repair,
                                                 Authority: 49 U.S.C. 106(g), 40113, 44701.           of this AD: Except as required by paragraph           modification, or alteration required by this
                                                                                                      (i) of this AD, at the applicable times               AD if it is approved by the Boeing
                                             § 39.13 [Amended]                                        specified in the ‘‘Compliance’’ paragraph of          Commercial Airplanes Organization
                                                                                                      Boeing Alert Requirements Bulletin 737–               Designation Authorization (ODA) that has
                                             ■ 2. The FAA amends § 39.13 by adding                    57A1338 RB, dated September 25, 2017, do              been authorized by the Manager, Los Angeles
                                             the following new airworthiness                          all applicable actions identified in, and in          ACO Branch, to make those findings. To be
                                             directive (AD):                                          accordance with, the Accomplishment                   approved, the repair method, modification
                                                                                                      Instructions of Boeing Alert Requirements             deviation, or alteration deviation must meet
                                             2018–18–13 The Boeing Company:
                                                                                                      Bulletin 737–57A1338 RB, dated September              the certification basis of the airplane, and the
                                                 Amendment 39–19392; Docket No.
                                                                                                      25, 2017.                                             approval must specifically refer to this AD.
                                                 FAA–2018–0112; Product Identifier
                                                 2017–NM–161–AD.                                         Note 1 to paragraph (h) of this AD:
                                                                                                      Guidance for accomplishing the actions                (m) Related Information
                                             (a) Effective Date                                       required by this AD can be found in Boeing              (1) For more information about this AD,
                                               This AD is effective October 18, 2018.                 Alert Service Bulletin 737–57A1338, dated             contact Payman Soltani, Aerospace Engineer,
                                                                                                      September 25, 2017, which is referred to in           Airframe Section, FAA, Los Angeles ACO
                                             (b) Affected ADs                                         Boeing Alert Requirements Bulletin 737–               Branch, 3960 Paramount Boulevard,
                                               This AD affects AD 2013–09–02,                         57A1338 RB, dated September 25, 2017.                 Lakewood, CA 90712 4137; phone: 562–627–
                                             Amendment 39–17443 (78 FR 27010, May 9,                  Additional guidance can be found in Boeing            5313; fax: 562–627–5210; email:
                                             2013) (‘‘AD 2013–09–02’’).                               Information Notice 737–57A1338 IN 01,                 payman.soltani@faa.gov.
                                                                                                      dated October 16, 2017; Boeing Information              (2) Service information identified in this
                                             (c) Applicability                                        Notice 737–57A1338 IN 02, dated March 16,             AD that is not incorporated by reference is
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                                                (1) This AD applies to all The Boeing                 2018; and Boeing Information Notice 737–              available at the addresses specified in
                                             Company Model 737–100, –200, –200C,                      57A1338 IN 03, dated March 20, 2018.                  paragraphs (n)(3) and (n)(4) of this AD.
                                             –300, –400, and –500 series airplanes,
                                             certificated in any category.                            (i) Exceptions to Service Information                 (n) Material Incorporated by Reference
                                                (2) Installation of Supplemental Type                 Specifications                                           (1) The Director of the Federal Register
                                             Certificate (STC) ST01219SE (http://                        For purposes of determining compliance             approved the incorporation by reference
                                             rgl.faa.gov/Regulatory_and_Guidance_                     with the requirements of this AD: Where               (IBR) of the service information listed in this



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                                             46384            Federal Register / Vol. 83, No. 178 / Thursday, September 13, 2018 / Rules and Regulations

                                             paragraph under 5 U.S.C. 552(a) and 1 CFR                of a certain document listed in this AD               the spiral tape. If there is any chafing on
                                             part 51.                                                 as of October 18, 2018.                               the cable, the NPRM proposed to require
                                                (2) You must use this service information                                                                   replacing the harness. The proposed
                                                                                                      ADDRESSES: For service information
                                             as applicable to do the actions required by
                                                                                                      identified in this final rule, contact                requirements were intended to prevent
                                             this AD, unless the AD specifies otherwise.
                                                (i) Boeing Alert Requirements Bulletin                Airbus Helicopters, 2701 N. Forum                     interference between the lower strobe
                                             737–57A1338 RB, dated September 25, 2017.                Drive, Grand Prairie, TX 75052;                       light electrical harness wiring and the
                                                (ii) Reserved.                                        telephone (972) 641–0000 or (800) 232–                helicopter structure, which could result
                                                (3) For service information identified in             0323; fax (972) 641–3775; or at http://               in chafing of an electrical harness
                                             this AD, contact Boeing Commercial                       www.helicopters.airbus.com/website/                   adjacent to the inboard fuel tank vapor
                                             Airplanes, Attention: Contractual & Data                 en/ref/Technical-Support_73.html. You                 space, a fuel tank fire, and subsequent
                                             Services (C&DS), 2600 Westminster Blvd.,                                                                       loss of control of the helicopter.
                                             MC 110–SK57, Seal Beach, CA 90740 5600;
                                                                                                      may review the referenced service
                                             telephone 562–797–1717; internet https://                information at the FAA, Office of the                    The NPRM was prompted by AD No.
                                             www.myboeingfleet.com.                                   Regional Counsel, Southwest Region,                   2016–0258, dated December 16, 2016,
                                                (4) You may view this service information             10101 Hillwood Pkwy., Room 6N–321,                    issued by EASA, which is the Technical
                                             at the FAA, Transport Standards Branch,                  Fort Worth, TX 76177. It is also                      Agent for the Member States of the
                                             2200 South 216th St., Des Moines, WA. For                available on the internet at http://                  European Union, to correct an unsafe
                                             information on the availability of this                  www.regulations.gov by searching for                  condition for Airbus Helicopters Model
                                             material at the FAA, call 206–231–3195.                  and locating Docket No. FAA–2018–                     AS 365 N2 and AS 365 N3 helicopters
                                                (5) You may view this service information
                                                                                                      0418.                                                 with certain serial numbers and
                                             that is incorporated by reference at the
                                             National Archives and Records                                                                                  configurations. EASA advises of in-
                                                                                                      Examining the AD Docket                               production helicopters with lower
                                             Administration (NARA). For information on
                                             the availability of this material at NARA, call             You may examine the AD docket on                   strobe light wiring harnesses that were
                                             202–741–6030, or go to: http://www.archives.             the internet at http://                               interfering with either the helicopter
                                             gov/federal-register/cfr/ibr-locations.html.             www.regulations.gov by searching for                  structure or the adjacent fuel tank
                                               Issued in Des Moines, Washington, on                   and locating Docket No. FAA–2018–                     support. EASA further states that an
                                             August 24, 2018.                                         0418; or in person at Docket Operations               investigation determined that the
                                             James Cashdollar,                                        between 9 a.m. and 5 p.m., Monday                     electrical harnesses of these lower
                                             Acting Director, System Oversight Division,
                                                                                                      through Friday, except Federal holidays.              strobe lights were manufactured with
                                             Aircraft Certification Service.                          The AD docket contains this AD, the                   additional length to facilitate removal
                                             [FR Doc. 2018–19185 Filed 9–12–18; 8:45 am]
                                                                                                      European Aviation Safety Agency                       and installation of the lower strobe light
                                                                                                      (EASA) AD, any incorporated-by-                       assembly. However, the additional
                                             BILLING CODE 4910–13–P
                                                                                                      reference service information, the                    length of wiring in the harness was not
                                                                                                      economic evaluation, any comments                     properly secured to the helicopter
                                             DEPARTMENT OF TRANSPORTATION                             received, and other information. The                  structure. According to EASA, this
                                                                                                      street address for Docket Operations                  could result in chafing of the harness on
                                             Federal Aviation Administration                          (phone: 800–647–5527) is U.S.                         the helicopter structure, creating an
                                                                                                      Department of Transportation, Docket                  ignition source adjacent to the inboard
                                             14 CFR Part 39                                           Operations, M–30, West Building                       fuel tank vapor space, and result in a
                                                                                                      Ground Floor, Room W12–140, 1200                      fuel tank fire.
                                             [Docket No. FAA–2018–0418; Product                       New Jersey Avenue SE, Washington, DC
                                             Identifier 2017–SW–016–AD; Amendment                                                                              To address this unsafe condition, the
                                             39–19390; AD 2018–18–11]
                                                                                                      20590.                                                EASA AD requires installing a cable
                                                                                                      FOR FURTHER INFORMATION CONTACT:                      mount, inspecting the lower strobe light
                                             RIN 2120–AA64                                            George Schwab, Aviation Safety                        electrical harness for damage, and re-
                                                                                                      Engineer, Safety Management Section,                  routing the electrical harness.
                                             Airworthiness Directives; Airbus
                                                                                                      Rotorcraft Standards Branch, FAA,
                                             Helicopters                                                                                                    Comments
                                                                                                      10101 Hillwood Pkwy., Fort Worth, TX
                                             AGENCY:  Federal Aviation                                76177; telephone (817) 222–5110; email                  We gave the public the opportunity to
                                             Administration (FAA), DOT.                               george.schwab@faa.gov.                                participate in developing this AD, but
                                             ACTION: Final rule.                                      SUPPLEMENTARY INFORMATION:                            we did not receive any comments on the
                                                                                                                                                            NPRM.
                                             SUMMARY:   We are adopting a new                         Discussion
                                             airworthiness directive (AD) for Airbus                                                                        FAA’s Determination
                                                                                                         On May 11, 2018, at 83 FR 21964, the
                                             Helicopters Model AS–365N2 and AS                        Federal Register published our notice of                These helicopters have been approved
                                             365 N3 helicopters with a lower strobe                   proposed rulemaking (NPRM), which                     by the aviation authority of France and
                                             light installed. This AD requires                        proposed to amend 14 CFR part 39 by                   are approved for operation in the United
                                             installing a cable mount, inspecting the                 adding an AD that would apply to                      States. Pursuant to our bilateral
                                             lower strobe light wiring harness, and                   Airbus Helicopters Model AS–365N2                     agreement with France, EASA, its
                                             re-routing the wiring harness. This AD                   and AS 365 N3 helicopters with a lower                technical representative, has notified us
                                             was prompted by reports of interference                  strobe light installed.                               of the unsafe condition described in the
                                             between the lower strobe light wiring                       The NPRM proposed to require                       EASA AD. We are issuing this AD
                                             harness and the helicopter structure.                    installing a cable mount on the                       because we evaluated all information
                                             The actions of this AD are intended to                   helicopter structure and inspecting the               provided by EASA and determined the
daltland on DSKBBV9HB2PROD with RULES




                                             prevent an unsafe condition on these                     lower strobe light electrical harness and             unsafe condition exists and is likely to
                                             helicopters.                                             the electrical harness between the cut-               exist or develop on other helicopters of
                                             DATES: This AD is effective October 18,                  off connector and Frame 2000 for torn                 these same type designs and that air
                                             2018.                                                    spiral tape and for any chafing on the                safety and the public interest require
                                                The Director of the Federal Register                  harness cables. If the spiral tape is torn,           adopting the AD requirements as
                                             approved the incorporation by reference                  the NPRM proposed to require replacing                proposed.


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Document Created: 2018-09-13 01:01:18
Document Modified: 2018-09-13 01:01:18
CategoryRegulatory Information
CollectionFederal Register
sudoc ClassAE 2.7:
GS 4.107:
AE 2.106:
PublisherOffice of the Federal Register, National Archives and Records Administration
SectionRules and Regulations
ActionFinal rule.
DatesThis AD is effective October 18, 2018.
ContactPayman Soltani, Aerospace Engineer, Airframe Section, FAA, Los Angeles ACO Branch, 3960 Paramount Boulevard, Lakewood, CA 90712-4137; phone: 562-627-5313; fax: 562-627- 5210; email: [email protected]
FR Citation83 FR 46380 
RIN Number2120-AA64
CFR AssociatedAir Transportation; Aircraft; Aviation Safety; Incorporation by Reference and Safety

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