83_FR_5771 83 FR 5743 - Airworthiness Directives; The Boeing Company Airplanes

83 FR 5743 - Airworthiness Directives; The Boeing Company Airplanes

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration

Federal Register Volume 83, Issue 28 (February 9, 2018)

Page Range5743-5746
FR Document2018-02193

We propose to adopt a new airworthiness directive (AD) for all The Boeing Company Model 737-100, -200, -200C, -300, -400, and -500 series airplanes. This proposed AD was prompted by reports of cracks found in the rear spar web and lower chord on the left and right wings. This proposed AD would require repetitive detailed inspections for cracking of the rear spar web and lower chord, and applicable on- condition actions. We are proposing this AD to address the unsafe condition on these products.

Federal Register, Volume 83 Issue 28 (Friday, February 9, 2018)
[Federal Register Volume 83, Number 28 (Friday, February 9, 2018)]
[Proposed Rules]
[Pages 5743-5746]
From the Federal Register Online  [www.thefederalregister.org]
[FR Doc No: 2018-02193]


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

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2018-0074; Product Identifier 2017-NM-148-AD]
RIN 2120-AA64


Airworthiness Directives; The Boeing Company Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

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

SUMMARY: We propose to adopt a new airworthiness directive (AD) for all 
The Boeing Company Model 737-100, -200, -200C, -300, -400, and -500 
series airplanes. This proposed AD was prompted by reports of cracks 
found in the rear spar web and lower chord on the left and right wings. 
This proposed AD would require repetitive detailed inspections for 
cracking of the rear spar web and lower chord, and applicable on-
condition actions. We are proposing this AD to address the unsafe 
condition on these products.

DATES: We must receive comments on this proposed AD by March 26, 2018.

ADDRESSES: You may send comments, using the procedures found in 14 CFR 
11.43 and 11.45, by any of the following methods:
     Federal eRulemaking Portal: Go to http://www.regulations.gov. Follow the instructions for submitting comments.
     Fax: 202-493-2251.
     Mail: U.S. Department of Transportation, Docket 
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New 
Jersey Avenue SE, Washington, DC 20590.
     Hand Delivery: Deliver to Mail address above between 9 
a.m. and 5 p.m., Monday through Friday, except Federal holidays.
    For service information identified in this NPRM, 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, 1601 Lind Avenue SW, Renton, WA. For information on 
the availability of this material at the FAA, call 425-227-1221. It is 
also available on the internet at http://www.regulations.gov by 
searching for and locating Docket No. FAA-2018-0074.

[[Page 5744]]

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-
0074; or in person at the Docket Management Facility between 9 a.m. and 
5 p.m., Monday through Friday, except Federal holidays. The AD docket 
contains this NPRM, the regulatory evaluation, any comments received, 
and other information. The street address for the Docket Office (phone: 
800-647-5527) is in the ADDRESSES section. Comments will be available 
in the AD docket shortly after receipt.

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: payman.soltani@faa.gov.

SUPPLEMENTARY INFORMATION: 

Comments Invited

    We invite you to send any written relevant data, views, or 
arguments about this proposal. Send your comments to an address listed 
under the ADDRESSES section. Include ``Docket No. FAA-2018-0074; 
Product Identifier 2017-NM-148-AD'' at the beginning of your comments. 
We specifically invite comments on the overall regulatory, economic, 
environmental, and energy aspects of this NPRM. We will consider all 
comments received by the closing date and may amend this NPRM because 
of those comments.
    We will post all comments we receive, without change, to http://www.regulations.gov, including any personal information you provide. We 
will also post a report summarizing each substantive verbal contact we 
receive about this proposed AD.

Discussion

    We have received a report indicating that cracks were found at 
fastener holes in the rear spar web and lower chord on the left and 
right wings between wing buttock line (WBL) 93 and WBL 146 on ten 
airplanes. The cracks were found on airplanes with total flight cycles 
between 46,190 and 55,633. Cracks in the rear spar web were reported on 
six airplanes. Cracks in the lower chord of the rear spar were reported 
on four airplanes. On one airplane, cracks were found at multiple 
locations in the rear spar web and in the lower chord. The largest 
reported cracks were 0.059 inch in the upper rear spar web, 0.045 inch 
in the lower rear spar web, and 0.063 inch in the lower chord. This 
condition, if not corrected, could lead to the inability of a principal 
structural element to sustain required flight load, which could 
adversely affect the structural integrity of the airplane.

Related Service Information Under 1 CFR Part 51

    We reviewed Boeing Alert Requirements Bulletin 737-57A1337 RB, 
dated September 14, 2017. The service information describes procedures 
for repetitive detailed or surface High Frequency Eddy Current (HFEC) 
inspections for cracking of the rear spar web and lower chord, and 
applicable on-condition actions. 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.

FAA's Determination

    We are proposing this AD because we evaluated all the relevant 
information and determined the unsafe condition described previously is 
likely to exist or develop in other products of the same type design.

Proposed AD Requirements

    For Group 2 airplanes (line numbers 292 through 3132), this 
proposed AD would require accomplishment of the actions identified in 
the Boeing Alert Requirements Bulletin 737-57A1337 RB, dated September 
14, 2017, described previously, except for any differences identified 
as exceptions in the regulatory text of this proposed AD. For 
information on the procedures and compliance times, see this service 
information at http://www.regulations.gov by searching for and locating 
Docket No. FAA-2018-0074.
    Group 1 airplanes (line numbers 1 through 291) have a limit of 
validity (LOV) of 34,000 total flight cycles, and the actions specified 
in Boeing Alert Requirements Bulletin 737-57A1337 RB, dated September 
14, 2017, would be required at a compliance time occurring after that 
LOV. Although operation of an airplane beyond its LOV is prohibited by 
14 CFR 121.1115 and 129.115, this NPRM would include those airplanes so 
they are tracked in the event the LOV is extended in the future.

Explanation of ``RB'' (Requirements Bulletin)

    The FAA has worked in conjunction with industry, under the 
Airworthiness Directives Implementation Aviation Rulemaking Committee 
(AD ARC), to enhance the AD system. One enhancement is a process for 
annotating which steps in the service information are ``required for 
compliance'' (RC) with an AD. Boeing has implemented this RC concept 
into Boeing service bulletins.
    In an effort to further improve the quality and flow time for AD-
related Boeing service information, a joint process improvement 
initiative was worked between the FAA and Boeing. The initiative 
resulted in the development of a new process in which the service 
information more clearly identifies the actions needed to address the 
unsafe condition in the ``Accomplishment Instructions.'' The new 
process results in a Boeing Requirements Bulletin (RB), which contains 
only the actions needed to address the unsafe condition (i.e., only RC 
actions).

Costs of Compliance

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

                                      Estimated Costs for Required Actions
----------------------------------------------------------------------------------------------------------------
                                                                                                 Cost on U.S.
             Action                    Labor cost         Parts cost      Cost per product        operators
----------------------------------------------------------------------------------------------------------------
Inspections.....................  Up to 22 work-hours              $0   Up to $1,870 per     Up to $299,200 per
                                   x $85 per hour =                      inspection cycle.    inspection cycle.
                                   up to $1,870 per
                                   inspection cycle.
----------------------------------------------------------------------------------------------------------------

    We have received no definitive data that would enable us to provide 
cost estimates for the on-condition actions specified in this proposed 
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

[[Page 5745]]

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 proposed 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 to the Director of the System Oversight 
Division.

Regulatory Findings

    We determined that this proposed AD would not have federalism 
implications under Executive Order 13132. This proposed AD would 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 this proposed 
regulation:
    (1) Is not a ``significant regulatory action'' under Executive 
Order 12866,
    (2) Is not a ``significant rule'' under the 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.

The Proposed Amendment

    Accordingly, under the authority delegated to me by the 
Administrator, the FAA proposes to amend 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):

The Boeing Company: Docket No. FAA-2018-0074; Product Identifier 
2017-NM-148-AD.

(a) Comments Due Date

    We must receive comments by March 26, 2018.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to all The Boeing Company Model 737-100, -200, -
200C, -300, -400, and -500 series airplanes, certificated in any 
category.

(d) Subject

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

(e) Unsafe Condition

    This AD was prompted by reports of cracks found in the rear spar 
web and lower chord on the left and right wings. We are issuing this 
AD to detect and correct cracks in the rear spar of the left and 
right wing between wing buttock line (WBL) 91 and WBL 155, which 
could lead to the inability of a principal structural element to 
sustain required flight load and adversely affect the structural 
integrity 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 in Group 1 in Boeing Alert Requirements 
Bulletin 737-57A1337 RB, dated September 14, 2017: Within 120 days 
after the effective date of this AD, inspect the airplane and do all 
applicable corrective actions using a method approved in accordance 
with the procedures specified in paragraph (j) of this AD.

(h) Required Actions for Group 2 Airplanes

    For airplanes identified as Group 2 in Boeing Alert Requirements 
Bulletin 737-57A1337 RB, dated September 14, 2017: Except as 
required by paragraph (i) of this AD, at the applicable times 
specified in the ``Compliance'' paragraph of Boeing Alert 
Requirements Bulletin 737-57A1337 RB, dated September 14, 2017, do 
all applicable actions identified in, and in accordance with, the 
Accomplishment Instructions of Boeing Alert Requirements Bulletin 
737-57A1337 RB, dated September 14, 2017.

    Note 1 to paragraph (h) of this AD: Guidance for accomplishing 
the actions required by this AD is included in Boeing Alert Service 
Bulletin 737-57A1337, dated September 14, 2017, which is referred to 
in Boeing Alert Requirements Bulletin 737-57A1337 RB, dated 
September 14, 2017.

(i) Exceptions to Service Information Specifications

    (1) For purposes of determining compliance with the requirements 
of this AD: Where Boeing Alert Requirements Bulletin 737-57A1337 RB, 
dated September 14, 2017, uses the phrase ``the original issue date 
of Requirements Bulletin 737-57A1337 RB,'' this AD requires using 
``the effective date of this AD.''
    (2) Where Boeing Alert Requirements Bulletin 737-57A1337 RB, 
dated September 14, 2017, specifies contacting Boeing, this AD 
requires repair using a method approved in accordance with the 
procedures specified in paragraph (j) of this AD.

(j) 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 (k)(1) of this AD. Information 
may be emailed to: 9-ANM-LAACO-AMOC-Requests@faa.gov.
    (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.

(k) 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: payman.soltani@faa.gov.
    (2) 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. You may view this referenced service 
information at the FAA, Transport Standards Branch, 1601 Lind Avenue 
SW, Renton, WA. For information on the availability of this material 
at the FAA, call 425-227-1221.


[[Page 5746]]


    Issued in Renton, Washington, on January 26, 2018.
Michael Kaszycki,
Acting Director, System Oversight Division, Aircraft Certification 
Service.
[FR Doc. 2018-02193 Filed 2-8-18; 8:45 am]
 BILLING CODE 4910-13-P



                                                                           Federal Register / Vol. 83, No. 28 / Friday, February 9, 2018 / Proposed Rules                                            5743

                                                  (f) Compliance                                             (2) Before using any approved AMOC,                DEPARTMENT OF TRANSPORTATION
                                                    Comply with this AD within the                        notify your appropriate principal inspector,
                                                  compliance times specified, unless already              or lacking a principal inspector, the manager         Federal Aviation Administration
                                                  done.                                                   of the local flight standards district office/
                                                                                                          certificate holding district office.                  14 CFR Part 39
                                                  (g) Inspection or Records Review
                                                                                                             (3) An AMOC that provides an acceptable
                                                    For airplanes that have an original                   level of safety may be used for any repair,           [Docket No. FAA–2018–0074; Product
                                                  certificate of airworthiness or export                  modification, or alteration required by this          Identifier 2017–NM–148–AD]
                                                  certificate of airworthiness issued on or               AD if it is approved by the Boeing
                                                  before the effective date of this AD: Within                                                                  RIN 2120–AA64
                                                                                                          Commercial Airplanes Organization
                                                  12 months after the effective date of this AD,
                                                  inspect to determine if integrated                      Designation Authorization (ODA) that has
                                                                                                          been authorized by the Manager, Seattle ACO
                                                                                                                                                                Airworthiness Directives; The Boeing
                                                  surveillance system (ISS) operational                                                                         Company Airplanes
                                                  program software (OPS) part number COL40–               Branch, to make those findings. To be
                                                  0010–0100 or COL46–0007–0100 is installed.              approved, the repair method, modification             AGENCY: Federal Aviation
                                                  A review of airplane maintenance records is             deviation, or alteration deviation must meet          Administration (FAA), DOT.
                                                  acceptable in lieu of this inspection if the            the certification basis of the airplane, and the
                                                                                                                                                                ACTION: Notice of proposed rulemaking
                                                  part number of the software can be                      approval must specifically refer to this AD.
                                                  conclusively determined from that review.                                                                     (NPRM).
                                                                                                             (4) For service information that contains
                                                  (h) Required Actions                                    steps that are labeled as RC, the provisions          SUMMARY:    We propose to adopt a new
                                                                                                          of paragraphs (l)(4)(i) and (l)(4)(ii) of this AD     airworthiness directive (AD) for all The
                                                     If, during any inspection or records review
                                                  required by paragraph (g) of this AD, any ISS           apply.                                                Boeing Company Model 737–100, –200,
                                                  OPS part number COL40–0010–0100 or                         (i) The steps labeled as RC, including             –200C, –300, –400, and –500 series
                                                  COL46–0007–0100 is found: Within 12                     substeps under an RC step and any figures             airplanes. This proposed AD was
                                                  months after the effective date of this AD, do          identified in an RC step, must be done to             prompted by reports of cracks found in
                                                  all applicable actions identified as ‘‘RC’’             comply with the AD. If a step or substep is           the rear spar web and lower chord on
                                                  (required for compliance) in, and in                    labeled ‘‘RC Exempt,’’ then the RC
                                                                                                                                                                the left and right wings. This proposed
                                                  accordance with, the Accomplishment                     requirement is removed from that step or
                                                  Instructions of Boeing Alert Service Bulletin                                                                 AD would require repetitive detailed
                                                                                                          substep. An AMOC is required for any
                                                  B787–81205–SB340036–00, Issue 001, dated                                                                      inspections for cracking of the rear spar
                                                                                                          deviations to RC steps, including substeps
                                                  June 30, 2017.                                                                                                web and lower chord, and applicable
                                                                                                          and identified figures.
                                                                                                                                                                on-condition actions. We are proposing
                                                  (i) Additional Actions for Group 1 Airplanes               (ii) Steps not labeled as RC may be
                                                                                                                                                                this AD to address the unsafe condition
                                                     For Group 1 airplanes identified in Boeing           deviated from using accepted methods in
                                                                                                                                                                on these products.
                                                  Alert Service Bulletin B787–81205–                      accordance with the operator’s maintenance
                                                                                                          or inspection program without obtaining               DATES: We must receive comments on
                                                  SB340036–00, Issue 001, dated June 30, 2017:
                                                  Prior to accomplishment of the actions                  approval of an AMOC, provided the RC steps,           this proposed AD by March 26, 2018.
                                                  required by paragraph (h) of this AD, install           including substeps and identified figures, can        ADDRESSES: You may send comments,
                                                  new software for the ISS OPS and the                    still be done as specified, and the airplane          using the procedures found in 14 CFR
                                                  displays and crew alerting (DCA) database, in           can be put back in an airworthy condition.            11.43 and 11.45, by any of the following
                                                  accordance with the Accomplishment                                                                            methods:
                                                  Instructions of Boeing Service Bulletin B787–           (m) Related Information
                                                                                                                                                                   • Federal eRulemaking Portal: Go to
                                                  81205–SB340005–00, Issue 002, dated April                  (1) For more information about this AD,
                                                  27, 2016.                                                                                                     http://www.regulations.gov. Follow the
                                                                                                          contact Nelson O. Sanchez, Aerospace                  instructions for submitting comments.
                                                  (j) Parts Installation Prohibition                      Engineer, Systems and Equipment Section,                 • Fax: 202–493–2251.
                                                     As of the effective date of this AD, no              FAA, Seattle ACO Branch, 1601 Lind Avenue                • Mail: U.S. Department of
                                                  person may install ISS OPS part number                  SW, Renton, WA 98057–3356; phone: 425–                Transportation, Docket Operations, M–
                                                  COL40–0010–0100 or COL46–0007–0100 on                   917–6489; fax: 425–917–6590; email:                   30, West Building Ground Floor, Room
                                                  any airplane, except in accomplishment of               nelson.sanchez@faa.gov.
                                                                                                                                                                W12–140, 1200 New Jersey Avenue SE,
                                                  the actions required by paragraph (i) of this              (2) For service information identified in
                                                                                                                                                                Washington, DC 20590.
                                                  AD.                                                     this AD, contact Boeing Commercial
                                                                                                                                                                   • Hand Delivery: Deliver to Mail
                                                  (k) Credit for Previous Actions                         Airplanes, Attention: Contractual & Data
                                                                                                                                                                address above between 9 a.m. and 5
                                                                                                          Services (C&DS), 2600 Westminster Blvd.,
                                                     This paragraph provides credit for the                                                                     p.m., Monday through Friday, except
                                                                                                          MC 110–SK57, Seal Beach, CA 90740–5600;
                                                  actions specified in paragraph (i) of this AD,                                                                Federal holidays.
                                                                                                          telephone 562–797–1717; internet https://
                                                  if those actions were performed before the                                                                       For service information identified in
                                                  effective date of this AD using Boeing Service          www.myboeingfleet.com. You may view this
                                                                                                          referenced service information at the FAA,
                                                                                                                                                                this NPRM, contact Boeing Commercial
                                                  Bulletin B787–81205–SB340005–00, Issue                                                                        Airplanes, Attention: Contractual & Data
                                                  001, dated December 11, 2015.                           Transport Standards Branch, 1601 Lind
                                                                                                          Avenue SW, Renton, WA. For information on             Services (C&DS), 2600 Westminster
                                                  (l) Alternative Methods of Compliance                   the availability of this material at the FAA,         Blvd., MC 110–SK57, Seal Beach, CA
                                                  (AMOCs)                                                                                                       90740–5600; telephone 562–797–1717;
                                                                                                          call 425–227–1221.
                                                     (1) The Manager, Seattle ACO Branch,                                                                       internet https://
                                                  FAA, has the authority to approve AMOCs                   Issued in Renton, Washington, on January            www.myboeingfleet.com. You may view
                                                  for this AD, if requested using the procedures          25, 2018.                                             this referenced service information at
sradovich on DSK3GMQ082PROD with PROPOSALS




                                                  found in 14 CFR 39.19. In accordance with               Michael Kaszycki,                                     the FAA, Transport Standards Branch,
                                                  14 CFR 39.19, send your request to your                 Acting Director, System Oversight Division,           1601 Lind Avenue SW, Renton, WA. For
                                                  principal inspector or local Flight Standards
                                                                                                          Aircraft Certification Service.                       information on the availability of this
                                                  District Office, as appropriate. If sending
                                                  information directly to the manager of the              [FR Doc. 2018–02199 Filed 2–8–18; 8:45 am]            material at the FAA, call 425–227–1221.
                                                  certification office, send it to the attention of       BILLING CODE 4910–13–P
                                                                                                                                                                It is also available on the internet at
                                                  the person identified in paragraph (m)(1) of                                                                  http://www.regulations.gov by searching
                                                  this AD. Information may be emailed to: 9-                                                                    for and locating Docket No. FAA–2018–
                                                  ANM-Seattle-ACO-AMOC-Requests@faa.gov.                                                                        0074.


                                             VerDate Sep<11>2014   16:06 Feb 08, 2018   Jkt 244001   PO 00000   Frm 00006   Fmt 4702   Sfmt 4702   E:\FR\FM\09FEP1.SGM   09FEP1


                                                  5744                          Federal Register / Vol. 83, No. 28 / Friday, February 9, 2018 / Proposed Rules

                                                  Examining the AD Docket                                        ten airplanes. The cracks were found on                   compliance times, see this service
                                                    You may examine the AD docket on                             airplanes with total flight cycles                        information at http://
                                                  the internet at http://                                        between 46,190 and 55,633. Cracks in                      www.regulations.gov by searching for
                                                  www.regulations.gov by searching for                           the rear spar web were reported on six                    and locating Docket No. FAA–2018–
                                                  and locating Docket No. FAA–2018–                              airplanes. Cracks in the lower chord of                   0074.
                                                  0074; or in person at the Docket                               the rear spar were reported on four                          Group 1 airplanes (line numbers 1
                                                  Management Facility between 9 a.m.                             airplanes. On one airplane, cracks were                   through 291) have a limit of validity
                                                  and 5 p.m., Monday through Friday,                             found at multiple locations in the rear                   (LOV) of 34,000 total flight cycles, and
                                                  except Federal holidays. The AD docket                         spar web and in the lower chord. The                      the actions specified in Boeing Alert
                                                  contains this NPRM, the regulatory                             largest reported cracks were 0.059 inch                   Requirements Bulletin 737–57A1337
                                                  evaluation, any comments received, and                         in the upper rear spar web, 0.045 inch                    RB, dated September 14, 2017, would be
                                                  other information. The street address for                      in the lower rear spar web, and 0.063                     required at a compliance time occurring
                                                  the Docket Office (phone: 800–647–                             inch in the lower chord. This condition,                  after that LOV. Although operation of an
                                                  5527) is in the ADDRESSES section.                             if not corrected, could lead to the                       airplane beyond its LOV is prohibited
                                                  Comments will be available in the AD                           inability of a principal structural
                                                                                                                                                                           by 14 CFR 121.1115 and 129.115, this
                                                  docket shortly after receipt.                                  element to sustain required flight load,
                                                                                                                                                                           NPRM would include those airplanes so
                                                                                                                 which could adversely affect the
                                                  FOR FURTHER INFORMATION CONTACT:                                                                                         they are tracked in the event the LOV
                                                                                                                 structural integrity of the airplane.
                                                  Payman Soltani, Aerospace Engineer,                                                                                      is extended in the future.
                                                  Airframe Section, FAA, Los Angeles                             Related Service Information Under 1
                                                                                                                                                                           Explanation of ‘‘RB’’ (Requirements
                                                  ACO Branch, 3960 Paramount                                     CFR Part 51
                                                                                                                                                                           Bulletin)
                                                  Boulevard, Lakewood, CA 90712–4137;                              We reviewed Boeing Alert
                                                  phone: 562–627–5313; fax: 562–627–                             Requirements Bulletin 737–57A1337                            The FAA has worked in conjunction
                                                  5210; email: payman.soltani@faa.gov.                           RB, dated September 14, 2017. The                         with industry, under the Airworthiness
                                                  SUPPLEMENTARY INFORMATION:                                     service information describes                             Directives Implementation Aviation
                                                                                                                 procedures for repetitive detailed or                     Rulemaking Committee (AD ARC), to
                                                  Comments Invited
                                                                                                                 surface High Frequency Eddy Current                       enhance the AD system. One
                                                    We invite you to send any written                            (HFEC) inspections for cracking of the                    enhancement is a process for annotating
                                                  relevant data, views, or arguments about                       rear spar web and lower chord, and                        which steps in the service information
                                                  this proposal. Send your comments to                           applicable on-condition actions. This                     are ‘‘required for compliance’’ (RC) with
                                                  an address listed under the ADDRESSES                          service information is reasonably                         an AD. Boeing has implemented this RC
                                                  section. Include ‘‘Docket No. FAA–                             available because the interested parties                  concept into Boeing service bulletins.
                                                  2018–0074; Product Identifier 2017–                            have access to it through their normal                       In an effort to further improve the
                                                  NM–148–AD’’ at the beginning of your                           course of business or by the means                        quality and flow time for AD-related
                                                  comments. We specifically invite                               identified in the ADDRESSES section.                      Boeing service information, a joint
                                                  comments on the overall regulatory,
                                                                                                                 FAA’s Determination                                       process improvement initiative was
                                                  economic, environmental, and energy
                                                                                                                                                                           worked between the FAA and Boeing.
                                                  aspects of this NPRM. We will consider                           We are proposing this AD because we
                                                                                                                                                                           The initiative resulted in the
                                                  all comments received by the closing                           evaluated all the relevant information
                                                                                                                 and determined the unsafe condition                       development of a new process in which
                                                  date and may amend this NPRM
                                                                                                                 described previously is likely to exist or                the service information more clearly
                                                  because of those comments.
                                                     We will post all comments we                                develop in other products of the same                     identifies the actions needed to address
                                                  receive, without change, to http://                            type design.                                              the unsafe condition in the
                                                  www.regulations.gov, including any                                                                                       ‘‘Accomplishment Instructions.’’ The
                                                                                                                 Proposed AD Requirements                                  new process results in a Boeing
                                                  personal information you provide. We
                                                  will also post a report summarizing each                         For Group 2 airplanes (line numbers                     Requirements Bulletin (RB), which
                                                  substantive verbal contact we receive                          292 through 3132), this proposed AD                       contains only the actions needed to
                                                  about this proposed AD.                                        would require accomplishment of the                       address the unsafe condition (i.e., only
                                                                                                                 actions identified in the Boeing Alert                    RC actions).
                                                  Discussion                                                     Requirements Bulletin 737–57A1337                         Costs of Compliance
                                                    We have received a report indicating                         RB, dated September 14, 2017,
                                                  that cracks were found at fastener holes                       described previously, except for any                         We estimate that this proposed AD
                                                  in the rear spar web and lower chord on                        differences identified as exceptions in                   affects 160 airplanes of U.S. registry. We
                                                  the left and right wings between wing                          the regulatory text of this proposed AD.                  estimate the following costs to comply
                                                  buttock line (WBL) 93 and WBL 146 on                           For information on the procedures and                     with this proposed AD:

                                                                                                              ESTIMATED COSTS FOR REQUIRED ACTIONS
                                                                  Action                                   Labor cost                  Parts cost                 Cost per product             Cost on U.S. operators

                                                  Inspections .............................   Up to 22 work-hours × $85                    $0               Up to $1,870 per inspection     Up to $299,200 per inspection
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                                                                                                per hour = up to $1,870 per                                   cycle.                          cycle.
                                                                                                inspection cycle.



                                                    We have received no definitive data                          Authority for This Rulemaking                             section 106, describes the authority of
                                                  that would enable us to provide cost                                                                                     the FAA Administrator. Subtitle VII:
                                                  estimates for the on-condition actions                           Title 49 of the United States Code                      Aviation Programs, describes in more
                                                                                                                 specifies the FAA’s authority to issue
                                                  specified in this proposed AD.
                                                                                                                 rules on aviation safety. Subtitle I,


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                                                                           Federal Register / Vol. 83, No. 28 / Friday, February 9, 2018 / Proposed Rules                                                 5745

                                                  detail the scope of the Agency’s                        PART 39—AIRWORTHINESS                                 Alert Service Bulletin 737–57A1337, dated
                                                  authority.                                              DIRECTIVES                                            September 14, 2017, which is referred to in
                                                     We are issuing this rulemaking under                                                                       Boeing Alert Requirements Bulletin 737–
                                                  the authority described in Subtitle VII,                ■ 1. The authority citation for part 39               57A1337 RB, dated September 14, 2017.
                                                  Part A, Subpart III, Section 44701:                     continues to read as follows:
                                                                                                                                                                (i) Exceptions to Service Information
                                                  ‘‘General requirements.’’ Under that                        Authority: 49 U.S.C. 106(g), 40113, 44701.        Specifications
                                                  section, Congress charges the FAA with                                                                          (1) For purposes of determining
                                                  promoting safe flight of civil aircraft in              § 39.13   [Amended]
                                                                                                                                                                compliance with the requirements of this AD:
                                                  air commerce by prescribing regulations                 ■ 2. The FAA amends § 39.13 by adding
                                                                                                                                                                Where Boeing Alert Requirements Bulletin
                                                  for practices, methods, and procedures                  the following new airworthiness                       737–57A1337 RB, dated September 14, 2017,
                                                  the Administrator finds necessary for                   directive (AD):                                       uses the phrase ‘‘the original issue date of
                                                  safety in air commerce. This regulation                 The Boeing Company: Docket No. FAA–                   Requirements Bulletin 737–57A1337 RB,’’
                                                  is within the scope of that authority                       2018–0074; Product Identifier 2017–               this AD requires using ‘‘the effective date of
                                                  because it addresses an unsafe condition                    NM–148–AD.                                        this AD.’’
                                                  that is likely to exist or develop on                                                                           (2) Where Boeing Alert Requirements
                                                                                                          (a) Comments Due Date
                                                  products identified in this rulemaking                                                                        Bulletin 737–57A1337 RB, dated September
                                                                                                            We must receive comments by March 26,               14, 2017, specifies contacting Boeing, this AD
                                                  action.                                                 2018.                                                 requires repair using a method approved in
                                                     This proposed AD is issued in
                                                                                                          (b) Affected ADs                                      accordance with the procedures specified in
                                                  accordance with authority delegated by                                                                        paragraph (j) of this AD.
                                                  the Executive Director, Aircraft                          None.
                                                  Certification Service, as authorized by                                                                       (j) Alternative Methods of Compliance
                                                                                                          (c) Applicability
                                                  FAA Order 8000.51C. In accordance                                                                             (AMOCs)
                                                                                                            This AD applies to all The Boeing
                                                  with that order, issuance of ADs is                     Company Model 737–100, –200, –200C,                     (1) The Manager, Los Angeles ACO Branch,
                                                  normally a function of the Compliance                   –300, –400, and –500 series airplanes,                FAA, has the authority to approve AMOCs
                                                  and Airworthiness Division, but during                  certificated in any category.                         for this AD, if requested using the procedures
                                                  this transition period, the Executive                                                                         found in 14 CFR 39.19. In accordance with
                                                  Director has delegated the authority to                 (d) Subject                                           14 CFR 39.19, send your request to your
                                                  issue ADs applicable to transport                         Air Transport Association (ATA) of                  principal inspector or local Flight Standards
                                                                                                          America Code 57, Wings.                               District Office, as appropriate. If sending
                                                  category airplanes to the Director of the
                                                                                                                                                                information directly to the manager of the
                                                  System Oversight Division.                              (e) Unsafe Condition                                  certification office, send it to the attention of
                                                  Regulatory Findings                                        This AD was prompted by reports of cracks          the person identified in paragraph (k)(1) of
                                                                                                          found in the rear spar web and lower chord            this AD. Information may be emailed to: 9-
                                                    We determined that this proposed AD                   on the left and right wings. We are issuing           ANM-LAACO-AMOC-Requests@faa.gov.
                                                  would not have federalism implications                  this AD to detect and correct cracks in the             (2) Before using any approved AMOC,
                                                  under Executive Order 13132. This                       rear spar of the left and right wing between          notify your appropriate principal inspector,
                                                  proposed AD would not have a                            wing buttock line (WBL) 91 and WBL 155,               or lacking a principal inspector, the manager
                                                  substantial direct effect on the States, on             which could lead to the inability of a                of the local flight standards district office/
                                                  the relationship between the national                   principal structural element to sustain               certificate holding district office.
                                                                                                          required flight load and adversely affect the           (3) An AMOC that provides an acceptable
                                                  Government and the States, or on the
                                                                                                          structural integrity of the airplane.                 level of safety may be used for any repair,
                                                  distribution of power and
                                                  responsibilities among the various                      (f) Compliance                                        modification, or alteration required by this
                                                  levels of government.                                                                                         AD if it is approved by the Boeing
                                                                                                             Comply with this AD within the
                                                                                                                                                                Commercial Airplanes Organization
                                                    For the reasons discussed above, I                    compliance times specified, unless already
                                                                                                                                                                Designation Authorization (ODA) that has
                                                  certify this proposed regulation:                       done.
                                                                                                                                                                been authorized by the Manager, Los Angeles
                                                    (1) Is not a ‘‘significant regulatory                 (g) Required Actions for Group 1 Airplanes            ACO Branch, to make those findings. To be
                                                  action’’ under Executive Order 12866,                      For airplanes identified in Group 1 in             approved, the repair method, modification
                                                    (2) Is not a ‘‘significant rule’’ under               Boeing Alert Requirements Bulletin 737–               deviation, or alteration deviation must meet
                                                  the DOT Regulatory Policies and                         57A1337 RB, dated September 14, 2017:                 the certification basis of the airplane, and the
                                                  Procedures (44 FR 11034, February 26,                   Within 120 days after the effective date of           approval must specifically refer to this AD.
                                                  1979),                                                  this AD, inspect the airplane and do all              (k) Related Information
                                                    (3) Will not affect intrastate aviation               applicable corrective actions using a method
                                                                                                          approved in accordance with the procedures               (1) For more information about this AD,
                                                  in Alaska, and                                                                                                contact Payman Soltani, Aerospace Engineer,
                                                                                                          specified in paragraph (j) of this AD.
                                                    (4) Will not have a significant                                                                             Airframe Section, FAA, Los Angeles ACO
                                                  economic impact, positive or negative,                  (h) Required Actions for Group 2 Airplanes            Branch, 3960 Paramount Boulevard,
                                                  on a substantial number of small entities                  For airplanes identified as Group 2 in             Lakewood, CA 90712–4137; phone: 562–627–
                                                  under the criteria of the Regulatory                    Boeing Alert Requirements Bulletin 737–               5313; fax: 562–627–5210; email:
                                                  Flexibility Act.                                        57A1337 RB, dated September 14, 2017:                 payman.soltani@faa.gov.
                                                                                                          Except as required by paragraph (i) of this              (2) For service information identified in
                                                  List of Subjects in 14 CFR Part 39                      AD, at the applicable times specified in the          this AD, contact Boeing Commercial
                                                    Air transportation, Aircraft, Aviation                ‘‘Compliance’’ paragraph of Boeing Alert              Airplanes, Attention: Contractual & Data
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                                                                                                          Requirements Bulletin 737–57A1337 RB,                 Services (C&DS), 2600 Westminster Blvd.,
                                                  safety, Incorporation by reference,
                                                                                                          dated September 14, 2017, do all applicable           MC 110–SK57, Seal Beach, CA 90740–5600;
                                                  Safety.                                                 actions identified in, and in accordance with,        telephone 562–797–1717; internet https://
                                                  The Proposed Amendment                                  the Accomplishment Instructions of Boeing             www.myboeingfleet.com. You may view this
                                                                                                          Alert Requirements Bulletin 737–57A1337               referenced service information at the FAA,
                                                    Accordingly, under the authority                      RB, dated September 14, 2017.                         Transport Standards Branch, 1601 Lind
                                                  delegated to me by the Administrator,                      Note 1 to paragraph (h) of this AD:                Avenue SW, Renton, WA. For information on
                                                  the FAA proposes to amend 14 CFR part                   Guidance for accomplishing the actions                the availability of this material at the FAA,
                                                  39 as follows:                                          required by this AD is included in Boeing             call 425–227–1221.



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                                                  5746                     Federal Register / Vol. 83, No. 28 / Friday, February 9, 2018 / Proposed Rules

                                                    Issued in Renton, Washington, on January              Series Technical Help Desk, 123 Garratt               maintenance or inspection program, as
                                                  26, 2018.                                               Boulevard, Toronto, Ontario M3K 1Y5,                  applicable. We issued AD 2014–05–28
                                                  Michael Kaszycki,                                       Canada; telephone: 416–375–4000; fax:                 to detect and correct up-lock hooks
                                                  Acting Director, System Oversight Division,             416–375–4539; email: thd.qseries@                     worn beyond the wear limit, which
                                                  Aircraft Certification Service.                         aero.bombardier.com; internet: http://                could prevent the successful extension
                                                  [FR Doc. 2018–02193 Filed 2–8–18; 8:45 am]              www.bombardier.com. You may view                      of the MLG using the primary landing
                                                  BILLING CODE 4910–13–P                                  this referenced service information at                gear extension system, which in
                                                                                                          the FAA, Transport Standards Branch,                  combination with an alternate extension
                                                                                                          1601 Lind Avenue SW, Renton, WA. For                  system failure could result in the
                                                  DEPARTMENT OF TRANSPORTATION                            information on the availability of this               inability to extend the MLG.
                                                                                                          material at the FAA, call 425–227–1221.                  Since we issued AD 2014–05–28, we
                                                  Federal Aviation Administration                                                                               have determined that the interval from
                                                                                                          Examining the AD Docket
                                                                                                                                                                MRB task number 323100–202 should
                                                  14 CFR Part 39                                             You may examine the AD docket on                   not be escalated, and that MRB task
                                                                                                          the internet at http://                               number 323100–202 should be
                                                  [Docket No. FAA–2018–0072; Product
                                                  Identifier 2017–NM–082–AD]                              www.regulations.gov by searching for                  applicable to all Model DHC–8–400
                                                                                                          and locating Docket No. FAA–2018–                     series airplanes, regardless of which
                                                  RIN 2120–AA64                                           0072; or in person at the Docket                      MLG up-lock assembly is installed.
                                                                                                          Management Facility between 9 a.m.                       This revised applicability has resulted
                                                  Airworthiness Directives; Bombardier,                   and 5 p.m., Monday through Friday,
                                                  Inc., Airplanes                                                                                               in CMR task number 323100–102 also
                                                                                                          except Federal holidays. The AD docket                being made applicable to all Model
                                                  AGENCY: Federal Aviation                                contains this proposed AD, the                        DHC–8–400 series airplanes, regardless
                                                  Administration (FAA), DOT.                              regulatory evaluation, any comments                   of MLG up-lock assembly part number
                                                                                                          received, and other information. The                  installation.
                                                  ACTION: Notice of proposed rulemaking
                                                                                                          street address for the Docket Operations                 Transport Canada Civil Aviation
                                                  (NPRM).
                                                                                                          office (telephone: 800–647–5527) is in                (TCCA), which is the aviation authority
                                                  SUMMARY:   We propose to supersede                      the ADDRESSES section. Comments will                  for Canada, has issued Canadian AD
                                                  Airworthiness Directive (AD) 2014–05–                   be available in the AD docket shortly                 CF–2017–15, dated May 29, 2017
                                                  28, for certain Bombardier, Inc., Model                 after receipt.                                        (referred to after this as the Mandatory
                                                  DHC–8–400 series airplanes. AD 2014–                    FOR FURTHER INFORMATION CONTACT: Erin                 Continuing Airworthiness Information,
                                                  05–28 requires revising the maintenance                 Hulverson, Aerospace Engineer, FAA,                   or ’’the MCAI’’), to correct an unsafe
                                                  or inspection program, as applicable.                   Boston ACO Branch, 1200 District                      condition for certain Bombardier, Inc.,
                                                  Since we issued AD 2014–05–28, we                       Avenue, Burlington, MA 01803;                         Model DHC–8–400 series airplanes. The
                                                  have determined that the interval from                  telephone: 781–238–7655.                              MCAI states:
                                                  maintenance review board (MRB) task                     SUPPLEMENTARY INFORMATION:
                                                                                                                                                                   [Canadian] AD CF–2012–21 [which
                                                  number 323100–202 should not be                         Comments Invited                                      corresponds to FAA AD 2014–05–28] was
                                                  escalated, and that Certification                                                                             issued to mandate the incorporation of
                                                  Maintenance Requirements (CMR) task                       We invite you to send any written                   Maintenance Review Board (MRB) task
                                                  number 323100–102 should be                             relevant data, views, or arguments about              number 323100–202. As in-service
                                                  applicable to all Model DHC–8–400                       this proposal. Send your comments to                  experience has shown that the interval for
                                                  series airplanes, regardless of which                   an address listed under the ADDRESSES                 MRB task number 323100–202 should not be
                                                  main landing gear (MLG) up-lock                         section. Include ‘‘Docket No. FAA–                    escalated, Bombardier has introduced one-
                                                  assembly is installed. This proposed AD                 2018–0072; Product Identifier 2017–                   star CMR task number 323100–102 to prevent
                                                                                                          NM–082–AD’’ at the beginning of your                  task escalation. Bombardier has also revised
                                                  would require revising the maintenance                                                                        the applicability of MRB task number
                                                  or inspection program, as applicable.                   comments. We specifically invite
                                                                                                                                                                323100–202 to be applicable to the entire
                                                  We are proposing this AD to address the                 comments on the overall regulatory,
                                                                                                                                                                DHC–8–400/–401/–402 fleet, regardless of
                                                  unsafe condition on these products.                     economic, environmental, and energy                   which main landing gear (MLG) up-lock
                                                  DATES: We must receive comments on
                                                                                                          aspects of this proposed AD. We will                  assembly part number is installed. This
                                                  this proposed AD by March 26, 2018.                     consider all comments received by the                 revised applicability has resulted in CMR
                                                                                                          closing date and may amend this                       task number 323100–102 also being made
                                                  ADDRESSES: You may send comments,                       proposed AD based on those comments.                  applicable to the entire DHC–8–400/–401/–
                                                  using the procedures found in 14 CFR                      We will post all comments we                        402 fleet, regardless of MLG up-lock
                                                  11.43 and 11.45, by any of the following                receive, without change, to http://                   assembly part number installation.
                                                  methods:                                                www.regulations.gov, including any                       This [Canadian] AD mandates the
                                                    • Federal eRulemaking Portal: Go to                   personal information you provide. We                  incorporation of CMR task number 323100–
                                                  http://www.regulations.gov. Follow the                                                                        102 [into the maintenance or inspection
                                                                                                          will also post a report summarizing each
                                                  instructions for submitting comments.                                                                         program, as applicable].
                                                                                                          substantive verbal contact we receive
                                                    • Fax: 202–493–2251.                                  about this proposed AD.                                 You may examine the MCAI in the
                                                    • Mail: U.S. Department of                                                                                  AD docket on the internet at http://
                                                  Transportation, Docket Operations, M–                   Discussion                                            www.regulations.gov by searching for
                                                  30, West Building Ground Floor, Room                      We issued AD 2014–05–28,                            and locating Docket No. FAA–2018–
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                                                  W12–140, 1200 New Jersey Avenue SE,                     Amendment 39–17800 (79 FR 18611,                      0072.
                                                  Washington, DC 20590.                                   April 3, 2014) (‘‘AD 2014–05–28’’), for
                                                    • Hand Delivery: Deliver to Mail                                                                            Related Service Information Under 1
                                                                                                          certain Bombardier, Inc., Model DHC–
                                                  address above between 9 a.m. and 5                                                                            CFR Part 51
                                                                                                          8–400 series airplanes.
                                                  p.m., Monday through Friday, except                       AD 2014–05–28 resulted from reports                   Bombardier, Inc., has issued Q400
                                                  Federal holidays.                                       of excessive wear on the lower latch                  Dash 8 Temporary Revision ALI–0168,
                                                    For service information identified in                 surface of the MLG up-lock hook. AD                   dated October 31, 2016, to Section 1–32,
                                                  this NPRM, contact Bombardier, Inc., Q-                 2014–05–28 requires revising the                      Landing Gear Maintenance Program, of


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Document Created: 2018-02-09 00:12:07
Document Modified: 2018-02-09 00:12:07
CategoryRegulatory Information
CollectionFederal Register
sudoc ClassAE 2.7:
GS 4.107:
AE 2.106:
PublisherOffice of the Federal Register, National Archives and Records Administration
SectionProposed Rules
ActionNotice of proposed rulemaking (NPRM).
DatesWe must receive comments on this proposed AD by March 26, 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 5743 
RIN Number2120-AA64
CFR AssociatedAir Transportation; Aircraft; Aviation Safety; Incorporation by Reference and Safety

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