82_FR_44929 82 FR 44744 - Airworthiness Directives; The Boeing Company Airplanes

82 FR 44744 - Airworthiness Directives; The Boeing Company Airplanes

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration

Federal Register Volume 82, Issue 185 (September 26, 2017)

Page Range44744-44746
FR Document2017-20545

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 a report of wire damage on a fuel boost pump power cable, and a separate report of a fuel tank explosion on a similarly equipped airplane. This proposed AD would require the installation of new shielded wire bundles and convoluted liners within fuel tank conduits, and revision of the maintenance or inspection program, as applicable, to incorporate certain airworthiness limitations (AWLs). We are proposing this AD to address the unsafe condition on these products.

Federal Register, Volume 82 Issue 185 (Tuesday, September 26, 2017)
[Federal Register Volume 82, Number 185 (Tuesday, September 26, 2017)]
[Proposed Rules]
[Pages 44744-44746]
From the Federal Register Online  [www.thefederalregister.org]
[FR Doc No: 2017-20545]


========================================================================
Proposed Rules
                                                Federal Register
________________________________________________________________________

This section of the FEDERAL REGISTER contains notices to the public of 
the proposed issuance of rules and regulations. The purpose of these 
notices is to give interested persons an opportunity to participate in 
the rule making prior to the adoption of the final rules.

========================================================================


Federal Register / Vol. 82, No. 185 / Tuesday, September 26, 2017 / 
Proposed Rules

[[Page 44744]]



DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2017-0900; Product Identifier 2017-NM-055-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 a report of wire 
damage on a fuel boost pump power cable, and a separate report of a 
fuel tank explosion on a similarly equipped airplane. This proposed AD 
would require the installation of new shielded wire bundles and 
convoluted liners within fuel tank conduits, and revision of the 
maintenance or inspection program, as applicable, to incorporate 
certain airworthiness limitations (AWLs). We are proposing this AD to 
address the unsafe condition on these products.

DATES: We must receive comments on this proposed AD by November 13, 
2017.

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-2017-0900.

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-2017-
0900; 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 proposed AD, 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: Christopher Baker, Aerospace Engineer, 
Propulsion Section, FAA, Seattle ACO Branch, 1601 Lind Avenue SW., 
Renton, WA 98057-3356; phone: 425-917-6498; fax: 425-917-6590; email: 
[email protected].

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-2017-0900; 
Product Identifier 2017-NM-055-AD'' at the beginning of your comments. 
We specifically invite comments on the overall regulatory, economic, 
environmental, and energy aspects of this proposed AD. We will consider 
all comments received by the closing date and may amend this proposed 
AD 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

    This proposed AD is further rulemaking following the interim action 
of AD 2007-24-02, Amendment 39-15268 (72 FR 65446, November 21, 2007) 
(``AD 2007-24-02''), which applies to all Boeing Model 737-100, -200, -
200C, -300, -400, -500 series airplanes. AD 2007-24-02 was prompted by 
reports of a fuel tank explosion on a Boeing Model 727-200F airplane 
and chafed wires and a damaged wiring sleeve on a fuel boost pump power 
cable in a Boeing Model 737-300 airplane. AD 2007-24-02 requires 
repetitive detailed inspections for damage of the electrical wire and 
sleeve that run to the fuel boost pump through a conduit in the fuel 
tank, to address potential electrical arcing between the wiring and the 
surrounding conduit that could result in arc-through of the conduit, 
consequent fire or explosion of the fuel tank, and subsequent loss of 
the airplane. The preamble to AD 2007-24-02 explains that its 
requirements are considered ``interim action'' and that we might 
consider further rulemaking. We now have determined that further 
rulemaking is necessary, and this proposed AD follows from that 
determination.

Related Service Information Under 1 CFR Part 51

    We reviewed the following service information.
     Boeing Alert Service Bulletin 737-28A1273, Revision 1, 
dated March 14, 2017. This service information describes procedures for 
the installation of new shielded wire bundles and convoluted liners 
within fuel tank conduits.
     Boeing 737-100/200/200C/300/400/500 Airworthiness 
Limitations (AWLs)/Certification Maintenance Requirements (CMRs), D6-
38278-CMR, dated May 2016. This service information describes new AWLs 
for inspecting the fuel tank wiring and conduits.
    This service information is reasonably available because the 
interested parties have access to it through their normal

[[Page 44745]]

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

    We considered a number of factors in determining whether to issue a 
new AD or to supersede AD 2007-24-02, including the size of the 
affected fleet and the consequent workload added by Boeing Alert 
Service Bulletin 737-28A1273, Revision 1, dated March 14, 2017. In 
light of this, the FAA has determined that the less burdensome approach 
is to issue a separate AD that includes only Boeing Alert Service 
Bulletin 737-28A1273, Revision 1, dated March 14, 2017. This proposed 
AD would not supersede AD 2007-24-02. Airplanes identified in the 
applicability of AD 2007-24-02 are required to continue to comply with 
the requirements of that AD until the corrective actions of this 
proposed AD are done, which would terminate the inspection and 
reporting requirements of AD 2007-24-02. This proposed AD is a separate 
AD action and would therefore require accomplishment of only those 
actions identified as ``RC'' (required for compliance) in the 
Accomplishment Instructions of Boeing Alert Service Bulletin 737-
28A1273, Revision 1, dated March 14, 2017, described previously, except 
for differences between this proposed AD and the service information 
that are identified 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-2017-0900.
    This proposed AD would also require revisions to certain operator 
maintenance documents to include new Critical Design Configuration 
Control Limitations (CDCCLs). Compliance with these CDCCLs is required 
by 14 CFR 91.403(c). For airplanes that have been previously modified, 
altered, or repaired in the areas addressed by this proposed AD, the 
operator may not be able to accomplish the actions described in the 
revisions. In this situation, to comply with 14 CFR 91.403(c), the 
operator must request approval for an alternative method of compliance 
according to paragraph (l) of this proposed AD. The request should 
include a description of changes to the required inspections that will 
ensure the continued operational safety of the airplane.

Explanation of Applicability

    Model 737 airplanes having line numbers 1 through 291 have a limit 
of validity (LOV) of 34,000 total flight cycles, and the actions 
proposed in this NPRM, as specified in Boeing Alert Service Bulletin 
737-28A1273, Revision 1, dated March 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 includes those airplanes in the applicability so that they 
are tracked in the event the LOV is extended in the future.

Costs of Compliance

    We estimate that this proposed AD affects 499 airplanes of U.S. 
registry. We estimate the following costs to comply with this proposed 
AD:

                                                 Estimated Costs
----------------------------------------------------------------------------------------------------------------
                                                                                     Cost per      Cost on U.S.
                Action                         Labor cost           Parts cost        product        operators
----------------------------------------------------------------------------------------------------------------
Installation..........................  154 work-hours x $85 per          $5,561         $18,651      $9,306,849
                                         hour = $13,090.
Incorporation of Airworthiness          1 work-hour x $85 per                  0              85          42,415
 Limitations.                            hour = $85.
----------------------------------------------------------------------------------------------------------------

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 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:


[[Page 44746]]


    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-2017-0900; Product Identifier 
2017-NM-055-AD.

(a) Comments Due Date

    We must receive comments by November 13, 2017.

(b) Affected ADs

    This AD affects AD 2007-24-02, Amendment 39-15268 (72 FR 65446, 
November 21, 2007) (``AD 2007-24-02'').

 (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 28, Fuel.

(e) Unsafe Condition

    This AD was prompted by reports of chafed wires and a damaged 
wiring sleeve on a fuel boost pump power cable, and an on-ground 
fuel tank explosion. We are issuing this AD to prevent electrical 
arcing between the fuel boost pump power cable wiring and the 
surrounding conduit, which could lead to arc-through of the conduit, 
consequent fire or explosion of the fuel tank, and subsequent loss 
of the airplane.

(f) Compliance

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

(g) Required Actions

    (1) For Group 1 and Group 2 airplanes identified in Boeing Alert 
Service Bulletin 737-28A1273, Revision 1, dated March 14, 2017: 
Except as required by paragraph (j) of this AD, at the applicable 
times specified in paragraph 1.E., ``Compliance,'' of Boeing Alert 
Service Bulletin 737-28A1273, Revision 1, dated March 14, 2017, do 
all applicable actions identified as required for compliance 
(``RC'') in, and in accordance with, the Accomplishment Instructions 
of Boeing Alert Service Bulletin 737-28A1273, Revision 1, dated 
March 14, 2017.
    (2) For airplanes identified as Group 3 in Boeing Alert Service 
Bulletin 737-28A1273, Revision 1, dated March 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 (l) of this 
AD.

(h) Revision of Maintenance or Inspection Program

    Within 60 days after the effective date of this AD: Revise the 
maintenance or inspection program, as applicable, to incorporate the 
applicable Airworthiness Limitations (AWLs) from Boeing 737-100/200/
200C/300/400/500 Airworthiness Limitations (AWLs)/Certification 
Maintenance Requirements (CMRs), D6-38278-CMR, dated May 2016, as 
identified in paragraphs (h)(1) and (h)(2) of this AD.
    (1) 28-AWL-18 and 28-AWL-26, ``Fuel Boost Pump Wires In Conduit 
Installation--In Fuel Tank,'' for Boeing Model 737-100, -200, -200C 
series airplanes.
    (2) 28-AWL-18 and 28-AWL-25, ``Fuel Boost Pump Wires In Conduit 
Installation--In Fuel Tank,'' for Boeing Model 737-300, -400, -500 
series airplanes.

(i) No Alternative Critical Design Configuration Control Limitations 
(CDCCLs)

    After the maintenance or inspection program, as applicable, has 
been revised as required by paragraph (h) of this AD, no alternative 
CDCCLs may be used unless the CDCCLs are approved as an alternative 
method of compliance (AMOC) in accordance with the procedures 
specified in paragraph (l) of this AD.

(j) Exceptions to Service Information Specifications

    Where Boeing Alert Service Bulletin 737-28A1273, Revision 1, 
dated March 14, 2017, uses the phrase ``after the original issue 
date of this service bulletin,'' for purposes of determining 
compliance with the requirements of this AD, the phrase ``after the 
effective date of this AD'' must be used.

(k) Terminating Action for Requirements of AD 2007-24-02

    Accomplishment of the actions required by paragraph (g) of this 
AD terminates all requirements of AD 2007-24-02.

(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)(2) 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.
    (4) For service information that contains steps that are labeled 
as Required for Compliance (RC), the provisions of paragraphs 
(l)(4)(i) and (l)(4)(ii) of this AD apply.
    (i) The steps labeled as RC, including substeps under an RC step 
and any figures identified in an RC step, must be done to comply 
with the AD. If a step or substep is labeled ``RC Exempt,'' then the 
RC requirement is removed from that step or substep. An AMOC is 
required for any deviations to RC steps, including substeps and 
identified figures.
    (ii) Steps not labeled as RC may be deviated from using accepted 
methods in accordance with the operator's maintenance or inspection 
program without obtaining approval of an AMOC, provided the RC 
steps, including substeps and identified figures, can still be done 
as specified, and the airplane can be put back in an airworthy 
condition.

(m) Related Information

    (1) For more information about this AD, contact Christopher 
Baker, Aerospace Engineer, Propulsion Section, FAA, Seattle ACO 
Branch, 1601 Lind Avenue SW., Renton, WA 98057-3356; phone: 425-917-
6498; fax: 425-917-6590; email: [email protected].
    (2) For information about AMOCs, contact Serj Harutunian, 
Aerospace Engineer, Propulsion Section, FAA, Los Angeles ACO Branch, 
3960 Paramount Boulevard, Lakewood, CA 90712-4137; phone: 562-627-
5254; fax: 562-627-5210; email: [email protected].
    (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. 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.

    Issued in Renton, Washington, on September 20, 2017.
Dionne Palermo,
Acting Director, System Oversight Division, Aircraft Certification 
Service.
[FR Doc. 2017-20545 Filed 9-25-17; 8:45 am]
 BILLING CODE 4910-13-P



     44744

     Proposed Rules                                                                                                Federal Register
                                                                                                                   Vol. 82, No. 185

                                                                                                                   Tuesday, September 26, 2017



     This section of the FEDERAL REGISTER                    p.m., Monday through Friday, except                     We will post all comments we
     contains notices to the public of the proposed          Federal holidays.                                     receive, without change, to http://
     issuance of rules and regulations. The                     For service information identified in              www.regulations.gov, including any
     purpose of these notices is to give interested          this NPRM, contact Boeing Commercial                  personal information you provide. We
     persons an opportunity to participate in the            Airplanes, Attention: Contractual & Data              will also post a report summarizing each
     rule making prior to the adoption of the final
     rules.
                                                             Services (C&DS), 2600 Westminster                     substantive verbal contact we receive
                                                             Blvd., MC 110–SK57, Seal Beach, CA                    about this proposed AD.
                                                             90740–5600; telephone 562–797–1717;
                                                                                                                   Discussion
     DEPARTMENT OF TRANSPORTATION                            Internet https://www.myboeing
                                                             fleet.com. You may view this referenced                  This proposed AD is further
     Federal Aviation Administration                         service information at the FAA,                       rulemaking following the interim action
                                                             Transport Standards Branch, 1601 Lind                 of AD 2007–24–02, Amendment 39–
     14 CFR Part 39                                          Avenue SW., Renton, WA. For                           15268 (72 FR 65446, November 21,
                                                             information on the availability of this               2007) (‘‘AD 2007–24–02’’), which
     [Docket No. FAA–2017–0900; Product                      material at the FAA, call 425–227–1221.               applies to all Boeing Model 737–100,
     Identifier 2017–NM–055–AD]
                                                             It is also available on the Internet at               –200, –200C, –300, –400, –500 series
     RIN 2120–AA64                                           http://www.regulations.gov by searching               airplanes. AD 2007–24–02 was
                                                             for and locating Docket No. FAA–2017–                 prompted by reports of a fuel tank
     Airworthiness Directives; The Boeing                    0900.                                                 explosion on a Boeing Model 727–200F
     Company Airplanes                                                                                             airplane and chafed wires and a
                                                             Examining the AD Docket
                                                                                                                   damaged wiring sleeve on a fuel boost
     AGENCY: Federal Aviation                                   You may examine the AD docket on                   pump power cable in a Boeing Model
     Administration (FAA), DOT.                              the Internet at http://                               737–300 airplane. AD 2007–24–02
     ACTION: Notice of proposed rulemaking                   www.regulations.gov by searching for                  requires repetitive detailed inspections
     (NPRM).                                                 and locating Docket No. FAA–2017–                     for damage of the electrical wire and
                                                             0900; or in person at the Docket                      sleeve that run to the fuel boost pump
     SUMMARY:   We propose to adopt a new                    Management Facility between 9 a.m.                    through a conduit in the fuel tank, to
     airworthiness directive (AD) for all The                and 5 p.m., Monday through Friday,                    address potential electrical arcing
     Boeing Company Model 737–100, –200,                     except Federal holidays. The AD docket                between the wiring and the surrounding
     –200C, –300, –400, and –500 series                      contains this proposed AD, the                        conduit that could result in arc-through
     airplanes. This proposed AD was                         regulatory evaluation, any comments                   of the conduit, consequent fire or
     prompted by a report of wire damage on                  received, and other information. The                  explosion of the fuel tank, and
     a fuel boost pump power cable, and a                    street address for the Docket Office                  subsequent loss of the airplane. The
     separate report of a fuel tank explosion                (phone: 800–647–5527) is in the                       preamble to AD 2007–24–02 explains
     on a similarly equipped airplane. This                  ADDRESSES section. Comments will be                   that its requirements are considered
     proposed AD would require the                           available in the AD docket shortly after              ‘‘interim action’’ and that we might
     installation of new shielded wire                       receipt.                                              consider further rulemaking. We now
     bundles and convoluted liners within
                                                             FOR FURTHER INFORMATION CONTACT:                      have determined that further
     fuel tank conduits, and revision of the
                                                             Christopher Baker, Aerospace Engineer,                rulemaking is necessary, and this
     maintenance or inspection program, as
                                                             Propulsion Section, FAA, Seattle ACO                  proposed AD follows from that
     applicable, to incorporate certain
                                                             Branch, 1601 Lind Avenue SW., Renton,                 determination.
     airworthiness limitations (AWLs). We
     are proposing this AD to address the                    WA 98057–3356; phone: 425–917–6498;
                                                                                                                   Related Service Information Under 1
     unsafe condition on these products.                     fax: 425–917–6590; email:
                                                                                                                   CFR Part 51
                                                             christopher.r.baker@faa.gov.
     DATES: We must receive comments on                                                                               We reviewed the following service
                                                             SUPPLEMENTARY INFORMATION:
     this proposed AD by November 13,                                                                              information.
     2017.                                                   Comments Invited                                         • Boeing Alert Service Bulletin 737–
     ADDRESSES:  You may send comments,                        We invite you to send any written                   28A1273, Revision 1, dated March 14,
     using the procedures found in 14 CFR                    relevant data, views, or arguments about              2017. This service information describes
     11.43 and 11.45, by any of the following                this proposal. Send your comments to                  procedures for the installation of new
     methods:                                                an address listed under the ADDRESSES                 shielded wire bundles and convoluted
       • Federal eRulemaking Portal: Go to                   section. Include ‘‘Docket No. FAA–                    liners within fuel tank conduits.
     http://www.regulations.gov. Follow the                  2017–0900; Product Identifier 2017–                      • Boeing 737–100/200/200C/300/400/
     instructions for submitting comments.                   NM–055–AD’’ at the beginning of your                  500 Airworthiness Limitations (AWLs)/
       • Fax: 202–493–2251.                                  comments. We specifically invite                      Certification Maintenance Requirements
       • Mail: U.S. Department of                            comments on the overall regulatory,                   (CMRs), D6–38278–CMR, dated May
     Transportation, Docket Operations, M–                   economic, environmental, and energy                   2016. This service information describes
     30, West Building Ground Floor, Room                    aspects of this proposed AD. We will                  new AWLs for inspecting the fuel tank
     W12–140, 1200 New Jersey Avenue SE.,                    consider all comments received by the                 wiring and conduits.
     Washington, DC 20590.                                   closing date and may amend this                          This service information is reasonably
       • Hand Delivery: Deliver to Mail                      proposed AD because of those                          available because the interested parties
     address above between 9 a.m. and 5                      comments.                                             have access to it through their normal


VerDate Sep<11>2014   16:11 Sep 25, 2017   Jkt 241001   PO 00000   Frm 00001   Fmt 4702   Sfmt 4702   E:\FR\FM\26SEP1.SGM   26SEP1


                                Federal Register / Vol. 82, No. 185 / Tuesday, September 26, 2017 / Proposed Rules                                                    44745

     course of business or by the means                                      inspection and reporting requirements                with 14 CFR 91.403(c), the operator
     identified in the ADDRESSES section.                                    of AD 2007–24–02. This proposed AD is                must request approval for an alternative
                                                                             a separate AD action and would                       method of compliance according to
     FAA’s Determination
                                                                             therefore require accomplishment of                  paragraph (l) of this proposed AD. The
       We are proposing this AD because we                                   only those actions identified as ‘‘RC’’              request should include a description of
     evaluated all the relevant information                                  (required for compliance) in the                     changes to the required inspections that
     and determined the unsafe condition                                     Accomplishment Instructions of Boeing                will ensure the continued operational
     described previously is likely to exist or                              Alert Service Bulletin 737–28A1273,                  safety of the airplane.
     develop in other products of the same                                   Revision 1, dated March 14, 2017,
     type design.                                                            described previously, except for                     Explanation of Applicability
     Proposed AD Requirements                                                differences between this proposed AD                    Model 737 airplanes having line
                                                                             and the service information that are                 numbers 1 through 291 have a limit of
       We considered a number of factors in                                  identified in the regulatory text of this
     determining whether to issue a new AD                                                                                        validity (LOV) of 34,000 total flight
                                                                             proposed AD.                                         cycles, and the actions proposed in this
     or to supersede AD 2007–24–02,                                             For information on the procedures
     including the size of the affected fleet                                                                                     NPRM, as specified in Boeing Alert
                                                                             and compliance times, see this service
     and the consequent workload added by                                                                                         Service Bulletin 737–28A1273, Revision
                                                                             information at http://
     Boeing Alert Service Bulletin 737–                                                                                           1, dated March 14, 2017, would be
                                                                             www.regulations.gov by searching for
     28A1273, Revision 1, dated March 14,                                                                                         required at a compliance time occurring
                                                                             and locating Docket No. FAA–2017–
     2017. In light of this, the FAA has                                                                                          after that LOV. Although operation of an
                                                                             0900.
     determined that the less burdensome                                        This proposed AD would also require               airplane beyond its LOV is prohibited
     approach is to issue a separate AD that                                 revisions to certain operator                        by 14 CFR 121.1115 and 129.115, this
     includes only Boeing Alert Service                                      maintenance documents to include new                 NPRM includes those airplanes in the
     Bulletin 737–28A1273, Revision 1,                                       Critical Design Configuration Control                applicability so that they are tracked in
     dated March 14, 2017. This proposed                                     Limitations (CDCCLs). Compliance with                the event the LOV is extended in the
     AD would not supersede AD 2007–24–                                      these CDCCLs is required by 14 CFR                   future.
     02. Airplanes identified in the                                         91.403(c). For airplanes that have been              Costs of Compliance
     applicability of AD 2007–24–02 are                                      previously modified, altered, or repaired
     required to continue to comply with the                                 in the areas addressed by this proposed                 We estimate that this proposed AD
     requirements of that AD until the                                       AD, the operator may not be able to                  affects 499 airplanes of U.S. registry. We
     corrective actions of this proposed AD                                  accomplish the actions described in the              estimate the following costs to comply
     are done, which would terminate the                                     revisions. In this situation, to comply              with this proposed AD:

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

     Installation .......................................................   154 work-hours × $85 per hour = $13,090 ....               $5,561          $18,651     $9,306,849
     Incorporation of Airworthiness Limitations ......                      1 work-hour × $85 per hour = $85 .................              0               85         42,415



     Authority for This Rulemaking                                           Certification Service, as authorized by                (2) Is not a ‘‘significant rule’’ under
        Title 49 of the United States Code                                   FAA Order 8000.51C. In accordance                    the DOT Regulatory Policies and
     specifies the FAA’s authority to issue                                  with that order, issuance of ADs is                  Procedures (44 FR 11034, February 26,
     rules on aviation safety. Subtitle I,                                   normally a function of the Compliance                1979),
     section 106, describes the authority of                                 and Airworthiness Division, but during                 (3) Will not affect intrastate aviation
     the FAA Administrator. Subtitle VII:                                    this transition period, the Executive                in Alaska, and
     Aviation Programs, describes in more                                    Director has delegated the authority to                (4) Will not have a significant
     detail the scope of the Agency’s                                        issue ADs applicable to transport                    economic impact, positive or negative,
     authority.                                                              category airplanes to the Director of the            on a substantial number of small entities
        We are issuing this rulemaking under                                 System Oversight Division.                           under the criteria of the Regulatory
     the authority described in Subtitle VII,                                                                                     Flexibility Act.
                                                                             Regulatory Findings
     Part A, Subpart III, Section 44701:                                                                                          List of Subjects in 14 CFR Part 39
     ‘‘General requirements.’’ Under that                                      We determined that this proposed AD                  Air transportation, Aircraft, Aviation
     section, Congress charges the FAA with                                  would not have federalism implications               safety, Incorporation by reference,
     promoting safe flight of civil aircraft in                              under Executive Order 13132. This                    Safety.
     air commerce by prescribing regulations                                 proposed AD would not have a
     for practices, methods, and procedures                                  substantial direct effect on the States, on          The Proposed Amendment
     the Administrator finds necessary for                                   the relationship between the national                  Accordingly, under the authority
     safety in air commerce. This regulation                                 Government and the States, or on the                 delegated to me by the Administrator,
     is within the scope of that authority                                   distribution of power and                            the FAA proposes to amend 14 CFR part
     because it addresses an unsafe condition                                responsibilities among the various                   39 as follows:
     that is likely to exist or develop on                                   levels of government.
     products identified in this rulemaking                                                                                       PART 39—AIRWORTHINESS
     action.                                                                   For the reasons discussed above, I
                                                                             certify this proposed regulation:                    DIRECTIVES
        This proposed AD is issued in
     accordance with authority delegated by                                    (1) Is not a ‘‘significant regulatory              ■ 1. The authority citation for part 39
     the Executive Director, Aircraft                                        action’’ under Executive Order 12866,                continues to read as follows:


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     44746               Federal Register / Vol. 82, No. 185 / Tuesday, September 26, 2017 / Proposed Rules

         Authority: 49 U.S.C. 106(g), 40113, 44701.          200/200C/300/400/500 Airworthiness                       (i) The steps labeled as RC, including
                                                             Limitations (AWLs)/Certification                      substeps under an RC step and any figures
     § 39.13   [Amended]                                     Maintenance Requirements (CMRs), D6–                  identified in an RC step, must be done to
     ■ 2. The FAA amends § 39.13 by adding                   38278–CMR, dated May 2016, as identified in           comply with the AD. If a step or substep is
     the following new airworthiness                         paragraphs (h)(1) and (h)(2) of this AD.              labeled ‘‘RC Exempt,’’ then the RC
     directive (AD):                                           (1) 28–AWL–18 and 28–AWL–26, ‘‘Fuel                 requirement is removed from that step or
                                                             Boost Pump Wires In Conduit Installation—             substep. An AMOC is required for any
     The Boeing Company: Docket No. FAA–                     In Fuel Tank,’’ for Boeing Model 737–100,             deviations to RC steps, including substeps
         2017–0900; Product Identifier 2017–                 –200, –200C series airplanes.                         and identified figures.
         NM–055–AD.                                            (2) 28–AWL–18 and 28–AWL–25, ‘‘Fuel                    (ii) Steps not labeled as RC may be
     (a) Comments Due Date                                   Boost Pump Wires In Conduit Installation—             deviated from using accepted methods in
                                                             In Fuel Tank,’’ for Boeing Model 737–300,             accordance with the operator’s maintenance
       We must receive comments by November                  –400, –500 series airplanes.                          or inspection program without obtaining
     13, 2017.                                                                                                     approval of an AMOC, provided the RC steps,
                                                             (i) No Alternative Critical Design
     (b) Affected ADs                                                                                              including substeps and identified figures, can
                                                             Configuration Control Limitations (CDCCLs)
                                                                                                                   still be done as specified, and the airplane
       This AD affects AD 2007–24–02,                           After the maintenance or inspection                can be put back in an airworthy condition.
     Amendment 39–15268 (72 FR 65446,                        program, as applicable, has been revised as
     November 21, 2007) (‘‘AD 2007–24–02’’).                 required by paragraph (h) of this AD, no              (m) Related Information
     (c) Applicability                                       alternative CDCCLs may be used unless the                (1) For more information about this AD,
                                                             CDCCLs are approved as an alternative                 contact Christopher Baker, Aerospace
        This AD applies to all The Boeing                    method of compliance (AMOC) in                        Engineer, Propulsion Section, FAA, Seattle
     Company Model 737–100, –200, –200C,                     accordance with the procedures specified in           ACO Branch, 1601 Lind Avenue SW.,
     –300, –400, and –500 series airplanes,                  paragraph (l) of this AD.                             Renton, WA 98057–3356; phone: 425–917–
     certificated in any category.                                                                                 6498; fax: 425–917–6590; email:
                                                             (j) Exceptions to Service Information
     (d) Subject                                                                                                   christopher.r.baker@faa.gov.
                                                             Specifications
                                                                                                                      (2) For information about AMOCs, contact
       Air Transport Association (ATA) of                       Where Boeing Alert Service Bulletin 737–           Serj Harutunian, Aerospace Engineer,
     America Code 28, Fuel.                                  28A1273, Revision 1, dated March 14, 2017,            Propulsion Section, FAA, Los Angeles ACO
     (e) Unsafe Condition                                    uses the phrase ‘‘after the original issue date       Branch, 3960 Paramount Boulevard,
                                                             of this service bulletin,’’ for purposes of           Lakewood, CA 90712–4137; phone: 562–627–
        This AD was prompted by reports of                   determining compliance with the
     chafed wires and a damaged wiring sleeve on                                                                   5254; fax: 562–627–5210; email:
                                                             requirements of this AD, the phrase ‘‘after the       serj.harutunian@faa.gov.
     a fuel boost pump power cable, and an on-               effective date of this AD’’ must be used.
     ground fuel tank explosion. We are issuing                                                                       (3) For service information identified in
     this AD to prevent electrical arcing between            (k) Terminating Action for Requirements of            this AD, contact Boeing Commercial
     the fuel boost pump power cable wiring and              AD 2007–24–02                                         Airplanes, Attention: Contractual & Data
     the surrounding conduit, which could lead to                                                                  Services (C&DS), 2600 Westminster Blvd.,
                                                               Accomplishment of the actions required by           MC 110–SK57, Seal Beach, CA 90740–5600;
     arc-through of the conduit, consequent fire or          paragraph (g) of this AD terminates all
     explosion of the fuel tank, and subsequent                                                                    telephone 562–797–1717; Internet https://
                                                             requirements of AD 2007–24–02.
     loss of the airplane.                                                                                         www.myboeingfleet.com. You may view this
                                                             (l) Alternative Methods of Compliance                 referenced service information at the FAA,
     (f) Compliance                                          (AMOCs)                                               Transport Standards Branch, 1601 Lind
        Comply with this AD within the                          (1) The Manager, Los Angeles ACO Branch,           Avenue SW., Renton, WA. For information
     compliance times specified, unless already              FAA, has the authority to approve AMOCs               on the availability of this material at the
     done.                                                   for this AD, if requested using the procedures        FAA, call 425–227–1221.
                                                             found in 14 CFR 39.19. In accordance with               Issued in Renton, Washington, on
     (g) Required Actions
                                                             14 CFR 39.19, send your request to your               September 20, 2017.
        (1) For Group 1 and Group 2 airplanes                principal inspector or local Flight Standards         Dionne Palermo,
     identified in Boeing Alert Service Bulletin             District Office, as appropriate. If sending
     737–28A1273, Revision 1, dated March 14,                information directly to the manager of the            Acting Director, System Oversight Division,
     2017: Except as required by paragraph (j) of            certification office, send it to the attention of     Aircraft Certification Service.
     this AD, at the applicable times specified in           the person identified in paragraph (m)(2) of          [FR Doc. 2017–20545 Filed 9–25–17; 8:45 am]
     paragraph 1.E., ‘‘Compliance,’’ of Boeing               this AD. Information may be emailed to: 9-            BILLING CODE 4910–13–P
     Alert Service Bulletin 737–28A1273,                     ANM-LAACO-AMOC-Requests@faa.gov.
     Revision 1, dated March 14, 2017, do all                   (2) Before using any approved AMOC,
     applicable actions identified as required for           notify your appropriate principal inspector,
     compliance (‘‘RC’’) in, and in accordance               or lacking a principal inspector, the manager
                                                                                                                   DEPARTMENT OF ENERGY
     with, the Accomplishment Instructions of                of the local flight standards district office/
     Boeing Alert Service Bulletin 737–28A1273,              certificate holding district office.                  Federal Energy Regulatory
     Revision 1, dated March 14, 2017.                          (3) An AMOC that provides an acceptable            Commission
        (2) For airplanes identified as Group 3 in           level of safety may be used for any repair,
     Boeing Alert Service Bulletin 737–28A1273,              modification, or alteration required by this          18 CFR Part 40
     Revision 1, dated March 14, 2017: Within                AD if it is approved by the Boeing
     120 days after the effective date of this AD,           Commercial Airplanes Organization                     [Docket No. RM17–12–000]
     inspect the airplane and do all applicable              Designation Authorization (ODA) that has
     corrective actions using a method approved              been authorized by the Manager, Los Angeles           Emergency Preparedness and
     in accordance with the procedures specified             ACO Branch, to make those findings. To be             Operations Reliability Standards
     in paragraph (l) of this AD.                            approved, the repair method, modification             AGENCY: Federal Energy Regulatory
                                                             deviation, or alteration deviation must meet
     (h) Revision of Maintenance or Inspection               the certification basis of the airplane, and the
                                                                                                                   Commission, Department of Energy.
     Program                                                 approval must specifically refer to this AD.          ACTION: Notice of proposed rulemaking.
       Within 60 days after the effective date of               (4) For service information that contains
     this AD: Revise the maintenance or                      steps that are labeled as Required for                SUMMARY:  The Federal Energy
     inspection program, as applicable, to                   Compliance (RC), the provisions of                    Regulatory Commission proposes to
     incorporate the applicable Airworthiness                paragraphs (l)(4)(i) and (l)(4)(ii) of this AD        approve Emergency Preparedness and
     Limitations (AWLs) from Boeing 737–100/                 apply.                                                Operations (EOP) Reliability Standards


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Document Created: 2017-09-26 02:48:20
Document Modified: 2017-09-26 02:48:20
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 November 13, 2017.
ContactChristopher Baker, Aerospace Engineer, Propulsion Section, FAA, Seattle ACO Branch, 1601 Lind Avenue SW., Renton, WA 98057-3356; phone: 425-917-6498; fax: 425-917-6590; email: [email protected]
FR Citation82 FR 44744 
RIN Number2120-AA64
CFR AssociatedAir Transportation; Aircraft; Aviation Safety; Incorporation by Reference and Safety

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