83_FR_32332 83 FR 32198 - Airworthiness Directives; The Boeing Company Airplanes

83 FR 32198 - Airworthiness Directives; The Boeing Company Airplanes

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration

Federal Register Volume 83, Issue 134 (July 12, 2018)

Page Range32198-32201
FR Document2018-14702

We are adopting a new airworthiness directive (AD) for certain The Boeing Company Model 777-200LR series airplanes. This AD requires revising certain documents to provide revised operating limitations. For certain airplanes, modification of the water and fuel scavenge systems in the fuel tanks, electrical changes in the main equipment center, and installation of new electrical load management system (ELMS2) software is an acceptable alternative to the documents revision. This AD was prompted by reports of unreliable performance of the water and fuel scavenge systems. We are issuing this AD to address the unsafe condition on these products.

Federal Register, Volume 83 Issue 134 (Thursday, July 12, 2018)
[Federal Register Volume 83, Number 134 (Thursday, July 12, 2018)]
[Rules and Regulations]
[Pages 32198-32201]
From the Federal Register Online  [www.thefederalregister.org]
[FR Doc No: 2018-14702]


=======================================================================
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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2018-0588; Product Identifier 2017-NM-105-AD; Amendment 
39-19328; AD 2018-14-08]
RIN 2120-AA64


Airworthiness Directives; The Boeing Company Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule; request for comments.

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

SUMMARY: We are adopting a new airworthiness directive (AD) for certain 
The Boeing Company Model 777-200LR series airplanes. This AD requires 
revising certain documents to provide revised operating limitations. 
For certain airplanes, modification of the water and fuel scavenge 
systems in the fuel tanks, electrical changes in the main equipment 
center, and installation of new electrical load management system 
(ELMS2) software is an acceptable alternative to the documents 
revision. This AD was prompted by reports of unreliable performance of 
the water and fuel scavenge systems. We are issuing this AD to address 
the unsafe condition on these products.

DATES: This AD is effective July 27, 2018.
    The Director of the Federal Register approved the incorporation by 
reference of a certain publication listed in this AD as of July 27, 
2018.
    We must receive comments on this AD by August 27, 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 final rule, contact 
Boeing Commercial Airplanes, Attention: Contractual & Data Services 
(C&DS), 2600 Westminster Blvd., MC 110-SK57, Seal Beach, CA 90740-5600; 
telephone 562-797-1717; internet https://www.myboeingfleet.com. You may 
view this service information at the FAA, Transport Standards Branch, 
2200 South 216th St., Des Moines, WA. For information on the 
availability of this material at the FAA, call 206-231-3195. It is also 
available on the internet at http://www.regulations.gov by searching 
for and locating Docket No. FAA-2018-0588.

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-
0588; 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 final rule, 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: Kevin Nguyen, Aerospace Engineer, 
Propulsion Section, FAA, Seattle ACO Branch, 2200 South 216th St., Des 
Moines, WA 98198; phone and fax: 206-231-3555; email: 
Kevin.Nguyen@faa.gov.

SUPPLEMENTARY INFORMATION: 

Discussion

    Operators have reported unreliable performance of the water and 
fuel scavenge systems. During flight, any water in the fuel can sink to 
the bottom of the fuel tank. This water can enter the fuel scavenge 
inlets and can then freeze as it travels from the body center fuel tank 
into the colder fuel scavenge tubes in the left and right cheek center 
fuel tanks (outboard of the side of body ribs). The frozen water can 
restrict the flow of scavenge fuel from the center fuel tank to the 
main fuel tanks, causing the fuel flow to decrease or stop. When this 
occurs, as much as 700 pounds of fuel can remain unavailable during 
flight. If the flightcrew is not aware that this fuel is unavailable 
and the fuel quantity decreases to the quantity of the unavailable 
fuel, then fuel exhaustion will occur, which could lead to subsequent 
power loss of all engines due to loss of capability to scavenge fuel in 
the center fuel tank.

Related Rulemaking

    We issued AD 2016-11-03, Amendment 39-18530 (81 FR 34867, June 1, 
2016) (``AD 2016-11-03''), that applied to certain Boeing Model 777-
200LR series airplanes equipped with or without auxiliary fuel tanks. 
For airplanes with auxiliary fuel tanks, variable numbers WD049-WD053 
inclusive only, AD 2016-11-03 requires modification of the water and 
fuel scavenge systems after removal of the auxiliary fuel tanks. This 
AD requires incorporation of revised operating limitations for those 
airplanes, which terminates the associated requirements of AD 2016-11-
03. This AD also provides the option of modifying the water and fuel 
scavenge systems in the fuel tanks, making electrical changes in the 
main equipment center, and installing new ELMS2 software after removal 
of the auxiliary fuel tanks. Either compliance method terminates the 
requirements of paragraphs (g), (h), and (i) of AD 2016-11-03 for those 
airplanes.
    Additionally, paragraph (g) of this AD requires a revision to 
certain documents to provide revised operating limitations for airplane 
variable numbers WD011 through WD015 inclusive and WD016 through WD018 
inclusive. These airplanes are not affected by AD 2016-11-03, which 
refers to Boeing Special Attention Service Bulletin 777-28-0078, 
Revision 1, dated April 27, 2015, for the applicability.
    Airplane variable numbers WD011 through WD015 inclusive are 
included in the effectivity of Boeing Special Attention Service 
Bulletin 777-28-0078, Revision 3, dated December 19, 2017; therefore, 
this AD provides a modification of the water and fuel scavenge systems 
in the fuel tanks, electrical changes in the main equipment center, and 
installation of new ELMS2 software as an acceptable alternative to the 
documents revision. However, there is no approved service information 
for airplane variable numbers WD016 through WD018 inclusive for the 
modification of the water and fuel scavenge systems in the fuel tanks, 
electrical changes in the main equipment center, and installation of 
new ELMS2 software; therefore, there is no alternative to the documents 
revision specified in this AD for these airplanes.

Related Service Information Under 1 CFR Part 51

    We reviewed Boeing Special Attention Service Bulletin 777-28-0078, 
Revision 3, dated December 19, 2017. The service information describes

[[Page 32199]]

procedures for the removal of the auxiliary fuel tanks and modification 
of the water and fuel scavenge systems in the fuel tanks, electrical 
changes in the main equipment center, and installation of new ELMS2 
software. 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 issuing 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.

AD Requirements

    This AD requires revising certain documents to provide revised 
operating limitations. For certain airplanes, this AD provides for the 
optional accomplishment of the actions specified in the service 
information described previously, as an acceptable alternative to the 
documents revision.

FAA's Justification and Determination of the Effective Date

    There are currently no domestic operators of this product. 
Therefore, we find that notice and opportunity for prior public comment 
are unnecessary and that good cause exists for making this amendment 
effective in less than 30 days.

Comments Invited

    This AD is a final rule that involves requirements affecting flight 
safety and was not preceded by notice and an opportunity for public 
comment. However, we invite you to send any written data, views, or 
arguments about this final rule. Send your comments to an address 
listed under the ADDRESSES section. Include the docket number FAA-2018-
0588 and Product Identifier 2017-NM-105-AD at the beginning of your 
comments. We specifically invite comments on the overall regulatory, 
economic, environmental, and energy aspects of this final rule. We will 
consider all comments received by the closing date and may amend this 
final rule 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 final rule.

Costs of Compliance

    Currently, there are no affected U.S.-registered airplanes. If an 
affected airplane is imported and placed on the U.S. Register in the 
future, we provide the following cost estimates to comply with this AD:

                                      Estimated Costs for Required Actions
----------------------------------------------------------------------------------------------------------------
                                                                                                     Cost per
                   Action                                 Labor cost                Parts cost        product
----------------------------------------------------------------------------------------------------------------
Revise operating limitations...............  1 work-hour x $85 per hour = $85...              $0             $85
----------------------------------------------------------------------------------------------------------------


                                      Estimated Costs for Optional Actions
----------------------------------------------------------------------------------------------------------------
               Action                          Labor cost             Parts cost          Cost per product
----------------------------------------------------------------------------------------------------------------
Modification........................  Up to 253 work-hours x $85           $66,960  Up to $88,465.
                                       per hour = up to $21,505.
----------------------------------------------------------------------------------------------------------------

Authority for This Rulemaking

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

Regulatory Findings

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

List of Subjects in 14 CFR Part 39

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

Adoption of the Amendment

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

PART 39--AIRWORTHINESS DIRECTIVES

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

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

[[Page 32200]]

Sec.  39.13  [Amended]

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

2018-14-08 The Boeing Company: Amendment 39-19328; Docket No. FAA-
2018-0588; Product Identifier 2017-NM-105-AD.

(a) Effective Date

    This AD is effective July 27, 2018.

(b) Affected ADs

    This new AD affects AD 2016-11-03, Amendment 39-18530 (81 FR 
34867, June 1, 2016) (``AD 2016-11-03'').

(c) Applicability

    This AD applies to The Boeing Company Model 777-200LR series 
airplanes, certificated in any category, variable numbers (V/Ns) 
WD011 through WD015 inclusive, WD016 through WD018 inclusive, and 
WD049 through WD053 inclusive.

(d) Subject

    Air Transport Association (ATA) of America Code 28, Fuel.

(e) Unsafe Condition

    This AD was prompted by reports of unreliable performance of the 
water and fuel scavenge systems. We are issuing this AD to prevent 
fuel exhaustion and subsequent power loss of all engines due to loss 
of access to fuel in the center fuel tank.

(f) Compliance

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

(g) Revision to Operating Limitations

    Except as provided by paragraph (h) of this AD: Within 36 months 
after the effective date of this AD, revise the applicable section 
of the documents specified in paragraphs (g)(1) and (g)(2) of this 
AD to include the information specified in figure 1 to the 
introductory text of paragraph (g) of this AD.
TR12JY18.019

    (1) Insert the information specified in figure 1 to the 
introductory text of paragraph (g) of this AD into the ``Fuel-
System--Loading'' section of the ``Certificate Limitations'' section 
of the FAA-approved Boeing Model 777 Airplane Flight Manual.
    (2) Insert the information specified in figure 1 to the 
introductory text of paragraph (g) of this AD into the ``Loading 
Limitations'' section of the ``Fuel Loading Procedures'' section of 
the ``Fuel Management'' section of the FAA-approved Boeing Model 777 
Weight and Balance Control and Loading Manual.

(h) Optional Terminating Action for V/Ns WD049-WD053 Inclusive and 
WD011-WD015 Inclusive

    For airplane V/Ns WD049 through WD053 inclusive, and WD011 
through WD015 inclusive: Accomplishment of the actions specified in 
paragraphs (h)(1) and (h)(2) of this AD terminates the requirements 
of paragraph (g) of this AD.
    (1) Remove the auxiliary fuel tanks in accordance with step 1. 
of the Accomplishment Instructions of Boeing Special Attention 
Service Bulletin 777-28-0078, Revision 3, dated December 19, 2017.
    (2) Modify the water and fuel scavenge systems in the fuel 
tanks, make electrical changes in the main equipment center, and 
install new electrical load management system (ELMS2) software, by 
doing all applicable actions identified as ``RC'' (required for 
compliance) in, and in accordance with, the Accomplishment 
Instructions of Boeing Special Attention Service Bulletin 777-28-
0078, Revision 3, dated December 19, 2017.

(i) Credit for Previous Actions

    (1) This paragraph provides credit for the actions specified in 
paragraphs (h)(1) and (h)(2) of this AD, if those actions were 
performed before the effective date of this AD using Boeing Special 
Attention Service Bulletin 777-28-0078, Revision 2, dated October 5, 
2016.
    (2) This paragraph provides credit for airplane V/Ns WD049 
through WD053 inclusive for the actions specified in paragraphs 
(h)(1) and (h)(2) of this AD, if those actions were performed before 
the effective date of this AD using April 27, 2015; or Boeing 
Special Attention Service Bulletin 777-28-0078, Revision 1, dated 
April 27, 2015.

(j) Parts Installation Prohibition

    After completion of the actions specified in paragraph (h) of 
this AD, no person may install an auxiliary fuel tank on that 
airplane.

(k) Terminating Action for AD 2016-11-03 for V/Ns WD049-WD053 Inclusive

    Accomplishment of the actions required by paragraph (g) or (h) 
of this AD terminates the requirements of paragraphs (g), (h), and 
(i) of AD 2016-11-03 for that airplane, V/Ns WD049 through WD053 
inclusive only.

(l) Alternative Methods of Compliance (AMOCs)

    (1) The Manager, Seattle 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) of this AD. Information may be 
emailed to 9-ANM-Seattle-ACO-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, Seattle ACO Branch, FAA, 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

    For more information about this AD, contact Kevin Nguyen, 
Aerospace Engineer, Propulsion Section, FAA, Seattle ACO Branch, 
2200 South 216th St., Des Moines, WA 98198; phone and fax: 206-231-
3555; email: Kevin.Nguyen@faa.gov.

[[Page 32201]]

(n) Material Incorporated by Reference

    (1) The Director of the Federal Register approved the 
incorporation by reference (IBR) of the service information listed 
in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51.
    (2) You must use this service information as applicable to do 
the actions required by this AD, unless the AD specifies otherwise.
    (i) Boeing Special Attention Service Bulletin 777-28-0078, 
Revision 3, dated December 19, 2017.
    (ii) Reserved.
    (3) For service information identified in this AD, contact 
Boeing Commercial Airplanes, Attention: Contractual & Data Services 
(C&DS), 2600 Westminster Blvd., MC 110-SK57, Seal Beach, CA 90740-
5600; telephone 562-797-1717; internet https://www.myboeingfleet.com.
    (4) You may view this service information at the FAA, Transport 
Standards Branch, 2200 South 216th St., Des Moines, WA. For 
information on the availability of this material at the FAA, call 
206-231-3195.
    (5) You may view this service information that is incorporated 
by reference at the National Archives and Records Administration 
(NARA). For information on the availability of this material at 
NARA, call 202-741-6030, or go to: http://www.archives.gov/federal-register/cfr/ibr-locations.html.

    Issued in Des Moines, Washington, on June 29, 2018.
Jeffrey E. Duven,
Director, System Oversight Division, Aircraft Certification Service.
[FR Doc. 2018-14702 Filed 7-11-18; 8:45 am]
 BILLING CODE 4910-13-P



                                           32198              Federal Register / Vol. 83, No. 134 / Thursday, July 12, 2018 / Rules and Regulations

                                             Dated: July 9, 2018.                                      For service information identified in              Related Rulemaking
                                           Bruce Summers,                                           this final rule, contact Boeing                          We issued AD 2016–11–03,
                                           Administrator, Agricultural Marketing                    Commercial Airplanes, Attention:                      Amendment 39–18530 (81 FR 34867,
                                           Service.                                                 Contractual & Data Services (C&DS),                   June 1, 2016) (‘‘AD 2016–11–03’’), that
                                           [FR Doc. 2018–14939 Filed 7–11–18; 8:45 am]              2600 Westminster Blvd., MC 110–SK57,                  applied to certain Boeing Model 777–
                                           BILLING CODE 3410–02–P                                   Seal Beach, CA 90740–5600; telephone                  200LR series airplanes equipped with or
                                                                                                    562–797–1717; internet https://                       without auxiliary fuel tanks. For
                                                                                                    www.myboeingfleet.com. You may view                   airplanes with auxiliary fuel tanks,
                                           DEPARTMENT OF TRANSPORTATION                             this service information at the FAA,                  variable numbers WD049–WD053
                                                                                                    Transport Standards Branch, 2200                      inclusive only, AD 2016–11–03 requires
                                           Federal Aviation Administration                          South 216th St., Des Moines, WA. For                  modification of the water and fuel
                                                                                                    information on the availability of this               scavenge systems after removal of the
                                           14 CFR Part 39                                           material at the FAA, call 206–231–3195.               auxiliary fuel tanks. This AD requires
                                           [Docket No. FAA–2018–0588; Product
                                                                                                    It is also available on the internet at               incorporation of revised operating
                                           Identifier 2017–NM–105–AD; Amendment                     http://www.regulations.gov by searching               limitations for those airplanes, which
                                           39–19328; AD 2018–14–08]                                 for and locating Docket No. FAA–2018–                 terminates the associated requirements
                                                                                                    0588.                                                 of AD 2016–11–03. This AD also
                                           RIN 2120–AA64
                                                                                                    Examining the AD Docket                               provides the option of modifying the
                                           Airworthiness Directives; The Boeing                                                                           water and fuel scavenge systems in the
                                                                                                      You may examine the AD docket on
                                           Company Airplanes                                                                                              fuel tanks, making electrical changes in
                                                                                                    the internet at http://
                                                                                                                                                          the main equipment center, and
                                           AGENCY:  Federal Aviation                                www.regulations.gov by searching for
                                                                                                                                                          installing new ELMS2 software after
                                           Administration (FAA), DOT.                               and locating Docket No. FAA–2018–
                                                                                                                                                          removal of the auxiliary fuel tanks.
                                           ACTION: Final rule; request for                          0588; or in person at the Docket
                                                                                                                                                          Either compliance method terminates
                                           comments.                                                Management Facility between 9 a.m.
                                                                                                                                                          the requirements of paragraphs (g), (h),
                                                                                                    and 5 p.m., Monday through Friday,
                                           SUMMARY:   We are adopting a new                                                                               and (i) of AD 2016–11–03 for those
                                                                                                    except Federal holidays. The AD docket
                                           airworthiness directive (AD) for certain                                                                       airplanes.
                                                                                                    contains this final rule, the regulatory
                                           The Boeing Company Model 777–200LR                                                                                Additionally, paragraph (g) of this AD
                                                                                                    evaluation, any comments received, and
                                           series airplanes. This AD requires                                                                             requires a revision to certain documents
                                                                                                    other information. The street address for
                                           revising certain documents to provide                                                                          to provide revised operating limitations
                                                                                                    the Docket Office (phone: 800–647–
                                           revised operating limitations. For                                                                             for airplane variable numbers WD011
                                                                                                    5527) is in the ADDRESSES section.
                                           certain airplanes, modification of the                                                                         through WD015 inclusive and WD016
                                                                                                    Comments will be available in the AD
                                           water and fuel scavenge systems in the                                                                         through WD018 inclusive. These
                                                                                                    docket shortly after receipt.
                                           fuel tanks, electrical changes in the                                                                          airplanes are not affected by AD 2016–
                                                                                                    FOR FURTHER INFORMATION CONTACT:                      11–03, which refers to Boeing Special
                                           main equipment center, and installation
                                                                                                    Kevin Nguyen, Aerospace Engineer,                     Attention Service Bulletin 777–28–
                                           of new electrical load management
                                                                                                    Propulsion Section, FAA, Seattle ACO                  0078, Revision 1, dated April 27, 2015,
                                           system (ELMS2) software is an
                                                                                                    Branch, 2200 South 216th St., Des                     for the applicability.
                                           acceptable alternative to the documents
                                                                                                    Moines, WA 98198; phone and fax: 206–                    Airplane variable numbers WD011
                                           revision. This AD was prompted by
                                                                                                    231–3555; email: Kevin.Nguyen@                        through WD015 inclusive are included
                                           reports of unreliable performance of the
                                                                                                    faa.gov.                                              in the effectivity of Boeing Special
                                           water and fuel scavenge systems. We are
                                           issuing this AD to address the unsafe                    SUPPLEMENTARY INFORMATION:                            Attention Service Bulletin 777–28–
                                           condition on these products.                                                                                   0078, Revision 3, dated December 19,
                                                                                                    Discussion
                                           DATES: This AD is effective July 27,                                                                           2017; therefore, this AD provides a
                                           2018.                                                       Operators have reported unreliable                 modification of the water and fuel
                                              The Director of the Federal Register                  performance of the water and fuel                     scavenge systems in the fuel tanks,
                                           approved the incorporation by reference                  scavenge systems. During flight, any                  electrical changes in the main
                                           of a certain publication listed in this AD               water in the fuel can sink to the bottom              equipment center, and installation of
                                           as of July 27, 2018.                                     of the fuel tank. This water can enter the            new ELMS2 software as an acceptable
                                              We must receive comments on this                      fuel scavenge inlets and can then freeze              alternative to the documents revision.
                                           AD by August 27, 2018.                                   as it travels from the body center fuel               However, there is no approved service
                                           ADDRESSES: You may send comments,                        tank into the colder fuel scavenge tubes              information for airplane variable
                                           using the procedures found in 14 CFR                     in the left and right cheek center fuel               numbers WD016 through WD018
                                           11.43 and 11.45, by any of the following                 tanks (outboard of the side of body ribs).            inclusive for the modification of the
                                           methods:                                                 The frozen water can restrict the flow of             water and fuel scavenge systems in the
                                              • Federal eRulemaking Portal: Go to                   scavenge fuel from the center fuel tank               fuel tanks, electrical changes in the
                                           http://www.regulations.gov. Follow the                   to the main fuel tanks, causing the fuel              main equipment center, and installation
                                           instructions for submitting comments.                    flow to decrease or stop. When this                   of new ELMS2 software; therefore, there
                                              • Fax: 202–493–2251.                                  occurs, as much as 700 pounds of fuel                 is no alternative to the documents
                                              • Mail: U.S. Department of                            can remain unavailable during flight. If              revision specified in this AD for these
                                           Transportation, Docket Operations,                       the flightcrew is not aware that this fuel            airplanes.
                                           M–30, West Building Ground Floor,                        is unavailable and the fuel quantity
amozie on DSK3GDR082PROD with RULES




                                                                                                    decreases to the quantity of the                      Related Service Information Under
                                           Room W12–140, 1200 New Jersey
                                                                                                    unavailable fuel, then fuel exhaustion                1 CFR Part 51
                                           Avenue SE, Washington, DC 20590.
                                              • Hand Delivery: Deliver to Mail                      will occur, which could lead to                         We reviewed Boeing Special
                                           address above between 9 a.m. and 5                       subsequent power loss of all engines                  Attention Service Bulletin 777–28–
                                           p.m., Monday through Friday, except                      due to loss of capability to scavenge fuel            0078, Revision 3, dated December 19,
                                           Federal holidays.                                        in the center fuel tank.                              2017. The service information describes


                                      VerDate Sep<11>2014   16:03 Jul 11, 2018   Jkt 244001   PO 00000   Frm 00008   Fmt 4700   Sfmt 4700   E:\FR\FM\12JYR1.SGM   12JYR1


                                                                    Federal Register / Vol. 83, No. 134 / Thursday, July 12, 2018 / Rules and Regulations                                                                32199

                                           procedures for the removal of the                                      accomplishment of the actions specified                    FAA–2018–0588 and Product Identifier
                                           auxiliary fuel tanks and modification of                               in the service information described                       2017–NM–105–AD at the beginning of
                                           the water and fuel scavenge systems in                                 previously, as an acceptable alternative                   your comments. We specifically invite
                                           the fuel tanks, electrical changes in the                              to the documents revision.                                 comments on the overall regulatory,
                                           main equipment center, and installation                                                                                           economic, environmental, and energy
                                                                                                                  FAA’s Justification and Determination
                                           of new ELMS2 software. This service                                                                                               aspects of this final rule. We will
                                                                                                                  of the Effective Date
                                           information is reasonably available                                                                                               consider all comments received by the
                                           because the interested parties have                                       There are currently no domestic                         closing date and may amend this final
                                           access to it through their normal course                               operators of this product. Therefore, we                   rule because of those comments.
                                           of business or by the means identified                                 find that notice and opportunity for
                                                                                                                                                                               We will post all comments we
                                           in the ADDRESSES section.                                              prior public comment are unnecessary
                                                                                                                  and that good cause exists for making                      receive, without change, to http://
                                           FAA’s Determination                                                    this amendment effective in less than 30                   www.regulations.gov, including any
                                             We are issuing this AD because we                                    days.                                                      personal information you provide. We
                                           evaluated all the relevant information                                                                                            will also post a report summarizing each
                                                                                                                  Comments Invited                                           substantive verbal contact we receive
                                           and determined the unsafe condition
                                           described previously is likely to exist or                               This AD is a final rule that involves                    about this final rule.
                                           develop in other products of the same                                  requirements affecting flight safety and                   Costs of Compliance
                                           type design.                                                           was not preceded by notice and an
                                                                                                                  opportunity for public comment.                              Currently, there are no affected U.S.-
                                           AD Requirements                                                        However, we invite you to send any                         registered airplanes. If an affected
                                             This AD requires revising certain                                    written data, views, or arguments about                    airplane is imported and placed on the
                                           documents to provide revised operating                                 this final rule. Send your comments to                     U.S. Register in the future, we provide
                                           limitations. For certain airplanes, this                               an address listed under the ADDRESSES                      the following cost estimates to comply
                                           AD provides for the optional                                           section. Include the docket number                         with this AD:

                                                                                                              ESTIMATED COSTS FOR REQUIRED ACTIONS
                                                                                                                                                                                                                      Cost per
                                                                             Action                                                                  Labor cost                                 Parts cost            product

                                           Revise operating limitations .........................................           1 work-hour × $85 per hour = $85 ...............................                 $0                 $85


                                                                                                               ESTIMATED COSTS FOR OPTIONAL ACTIONS
                                                                                                                                                                                                                     Cost per
                                                                             Action                                                                 Labor cost                                 Parts cost            product

                                           Modification .................................................................   Up to 253 work-hours × $85 per hour = up to                            $66,960        Up to $88,465.
                                                                                                                              $21,505.



                                           Authority for This Rulemaking                                          as authorized by FAA Order 8000.51C.                         (2) Is not a ‘‘significant rule’’ under
                                              Title 49 of the United States Code                                  In accordance with that order, issuance                    DOT Regulatory Policies and Procedures
                                           specifies the FAA’s authority to issue                                 of ADs is normally a function of the                       (44 FR 11034, February 26, 1979),
                                           rules on aviation safety. Subtitle I,                                  Compliance and Airworthiness                                 (3) Will not affect intrastate aviation
                                           section 106, describes the authority of                                Division, but during this transition                       in Alaska, and
                                                                                                                  period, the Executive Director has                           (4) Will not have a significant
                                           the FAA Administrator. ‘‘Subtitle VII:
                                                                                                                  delegated the authority to issue ADs                       economic impact, positive or negative,
                                           Aviation Programs’’ describes in more
                                                                                                                  applicable to transport category                           on a substantial number of small entities
                                           detail the scope of the Agency’s
                                                                                                                                                                             under the criteria of the Regulatory
                                           authority.                                                             airplanes to the Director of the System
                                                                                                                                                                             Flexibility Act.
                                              We are issuing this rulemaking under                                Oversight Division.
                                           the authority described in Subtitle VII,                                                                                          List of Subjects in 14 CFR Part 39
                                           Part A, Subpart III, Section 44701:                                    Regulatory Findings
                                                                                                                                                                               Air transportation, Aircraft, Aviation
                                           ‘‘General requirements.’’ Under that                                     This AD will not have federalism                         safety, Incorporation by reference,
                                           section, Congress charges the FAA with                                 implications under Executive Order                         Safety.
                                           promoting safe flight of civil aircraft in                             13132. This AD will not have a
                                           air commerce by prescribing regulations                                                                                           Adoption of the Amendment
                                                                                                                  substantial direct effect on the States, on
                                           for practices, methods, and procedures                                                                                              Accordingly, under the authority
                                                                                                                  the relationship between the national
                                           the Administrator finds necessary for                                                                                             delegated to me by the Administrator,
                                                                                                                  government and the States, or on the
                                           safety in air commerce. This regulation                                                                                           the FAA amends 14 CFR part 39 as
                                           is within the scope of that authority                                  distribution of power and
                                                                                                                                                                             follows:
                                           because it addresses an unsafe condition                               responsibilities among the various
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                                           that is likely to exist or develop on                                  levels of government.                                      PART 39—AIRWORTHINESS
                                           products identified in this rulemaking                                   For the reasons discussed above, I                       DIRECTIVES
                                           action.                                                                certify that this AD:
                                              This AD is issued in accordance with                                                                                           ■ 1. The authority citation for part 39
                                                                                                                    (1) Is not a ‘‘significant regulatory                    continues to read as follows:
                                           authority delegated by the Executive                                   action’’ under Executive Order 12866,
                                           Director, Aircraft Certification Service,                                                                                             Authority: 49 U.S.C. 106(g), 40113, 44701.



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                                           32200              Federal Register / Vol. 83, No. 134 / Thursday, July 12, 2018 / Rules and Regulations

                                           § 39.13   [Amended]                                      (c) Applicability                                     power loss of all engines due to loss of access
                                           ■ 2. The FAA amends § 39.13 by adding                       This AD applies to The Boeing Company              to fuel in the center fuel tank.
                                           the following new airworthiness                          Model 777–200LR series airplanes,                     (f) Compliance
                                           directive (AD):                                          certificated in any category, variable numbers
                                                                                                    (V/Ns) WD011 through WD015 inclusive,                   Comply with this AD within the
                                           2018–14–08 The Boeing Company:                           WD016 through WD018 inclusive, and                    compliance times specified, unless already
                                               Amendment 39–19328; Docket No.                       WD049 through WD053 inclusive.                        done.
                                               FAA–2018–0588; Product Identifier
                                               2017–NM–105–AD.                                      (d) Subject                                           (g) Revision to Operating Limitations
                                                                                                      Air Transport Association (ATA) of                    Except as provided by paragraph (h) of this
                                           (a) Effective Date                                       America Code 28, Fuel.                                AD: Within 36 months after the effective date
                                             This AD is effective July 27, 2018.
                                                                                                    (e) Unsafe Condition                                  of this AD, revise the applicable section of
                                           (b) Affected ADs                                            This AD was prompted by reports of                 the documents specified in paragraphs (g)(1)
                                             This new AD affects AD 2016–11–03,                     unreliable performance of the water and fuel          and (g)(2) of this AD to include the
                                           Amendment 39–18530 (81 FR 34867, June 1,                 scavenge systems. We are issuing this AD to           information specified in figure 1 to the
                                           2016) (‘‘AD 2016–11–03’’).                               prevent fuel exhaustion and subsequent                introductory text of paragraph (g) of this AD.




                                              (1) Insert the information specified in               using Boeing Special Attention Service                   (3) An AMOC that provides an acceptable
                                           figure 1 to the introductory text of paragraph           Bulletin 777–28–0078, Revision 2, dated               level of safety may be used for any repair,
                                           (g) of this AD into the ‘‘Fuel-System—                   October 5, 2016.                                      modification, or alteration required by this
                                           Loading’’ section of the ‘‘Certificate                      (2) This paragraph provides credit for             AD if it is approved by the Boeing
                                           Limitations’’ section of the FAA-approved                airplane V/Ns WD049 through WD053                     Commercial Airplanes Organization
                                           Boeing Model 777 Airplane Flight Manual.                 inclusive for the actions specified in                Designation Authorization (ODA) that has
                                              (2) Insert the information specified in               paragraphs (h)(1) and (h)(2) of this AD, if
                                                                                                                                                          been authorized by the Manager, Seattle ACO
                                           figure 1 to the introductory text of paragraph           those actions were performed before the
                                                                                                                                                          Branch, FAA, to make those findings. To be
                                           (g) of this AD into the ‘‘Loading Limitations’’          effective date of this AD using April 27, 2015;
                                           section of the ‘‘Fuel Loading Procedures’’               or Boeing Special Attention Service Bulletin          approved, the repair method, modification
                                           section of the ‘‘Fuel Management’’ section of            777–28–0078, Revision 1, dated April 27,              deviation, or alteration deviation must meet
                                           the FAA-approved Boeing Model 777 Weight                 2015.                                                 the certification basis of the airplane, and the
                                           and Balance Control and Loading Manual.                                                                        approval must specifically refer to this AD.
                                                                                                    (j) Parts Installation Prohibition                       (4) For service information that contains
                                           (h) Optional Terminating Action for V/Ns                    After completion of the actions specified in       steps that are labeled as Required for
                                           WD049–WD053 Inclusive and WD011–                         paragraph (h) of this AD, no person may               Compliance (RC), the provisions of
                                           WD015 Inclusive                                          install an auxiliary fuel tank on that airplane.      paragraphs (l)(4)(i) and (l)(4)(ii) of this AD
                                              For airplane V/Ns WD049 through WD053                                                                       apply.
                                           inclusive, and WD011 through WD015                       (k) Terminating Action for AD 2016–11–03
                                                                                                    for V/Ns WD049–WD053 Inclusive                           (i) The steps labeled as RC, including
                                           inclusive: Accomplishment of the actions                                                                       substeps under an RC step and any figures
                                           specified in paragraphs (h)(1) and (h)(2) of               Accomplishment of the actions required by
                                                                                                    paragraph (g) or (h) of this AD terminates the        identified in an RC step, must be done to
                                           this AD terminates the requirements of
                                           paragraph (g) of this AD.                                requirements of paragraphs (g), (h), and (i) of       comply with the AD. If a step or substep is
                                              (1) Remove the auxiliary fuel tanks in                AD 2016–11–03 for that airplane, V/Ns                 labeled ‘‘RC Exempt,’’ then the RC
                                           accordance with step 1. of the                           WD049 through WD053 inclusive only.                   requirement is removed from that step or
                                           Accomplishment Instructions of Boeing                                                                          substep. An AMOC is required for any
                                                                                                    (l) Alternative Methods of Compliance                 deviations to RC steps, including substeps
                                           Special Attention Service Bulletin 777–28–
                                                                                                    (AMOCs)                                               and identified figures.
                                           0078, Revision 3, dated December 19, 2017.
                                              (2) Modify the water and fuel scavenge                   (1) The Manager, Seattle ACO Branch,                  (ii) Steps not labeled as RC may be
                                           systems in the fuel tanks, make electrical               FAA, has the authority to approve AMOCs               deviated from using accepted methods in
                                           changes in the main equipment center, and                for this AD, if requested using the procedures        accordance with the operator’s maintenance
                                           install new electrical load management                   found in 14 CFR 39.19. In accordance with             or inspection program without obtaining
                                           system (ELMS2) software, by doing all                    14 CFR 39.19, send your request to your               approval of an AMOC, provided the RC steps,
                                           applicable actions identified as ‘‘RC’’                  principal inspector or local Flight Standards
                                                                                                                                                          including substeps and identified figures, can
                                           (required for compliance) in, and in                     District Office, as appropriate. If sending
                                                                                                                                                          still be done as specified, and the airplane
                                           accordance with, the Accomplishment                      information directly to the manager of the
                                                                                                    certification office, send it to the attention of     can be put back in an airworthy condition.
                                           Instructions of Boeing Special Attention
                                           Service Bulletin 777–28–0078, Revision 3,                the person identified in paragraph (m) of this        (m) Related Information
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                                           dated December 19, 2017.                                 AD. Information may be emailed to 9-ANM-
                                                                                                    Seattle-ACO-AMOC-Requests@faa.gov.                      For more information about this AD,
                                           (i) Credit for Previous Actions                             (2) Before using any approved AMOC,                contact Kevin Nguyen, Aerospace Engineer,
                                              (1) This paragraph provides credit for the            notify your appropriate principal inspector,          Propulsion Section, FAA, Seattle ACO
                                           actions specified in paragraphs (h)(1) and               or lacking a principal inspector, the manager         Branch, 2200 South 216th St., Des Moines,
                                           (h)(2) of this AD, if those actions were                 of the local flight standards district office/        WA 98198; phone and fax: 206–231–3555;
                                                                                                                                                                                                             ER12JY18.019</GPH>




                                           performed before the effective date of this AD           certificate holding district office.                  email: Kevin.Nguyen@faa.gov.



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                                                              Federal Register / Vol. 83, No. 134 / Thursday, July 12, 2018 / Rules and Regulations                                         32201

                                           (n) Material Incorporated by Reference                      The Director of the Federal Register               assemblies. The proposed requirements
                                              (1) The Director of the Federal Register              approved the incorporation by reference               were intended to prevent the forward
                                           approved the incorporation by reference                  of a certain document listed in this AD               spar or actuator fitting assembly from
                                           (IBR) of the service information listed in this          as of August 16, 2018.                                remaining in service after reaching its
                                           paragraph under 5 U.S.C. 552(a) and 1 CFR                                                                      life limit. This condition could result in
                                                                                                    ADDRESSES: For service information
                                           part 51.                                                                                                       failure of a forward spar or actuator
                                              (2) You must use this service information             identified in this final rule, contact Bell
                                           as applicable to do the actions required by              Helicopter Textron Canada Limited,                    fitting assembly and subsequent
                                           this AD, unless the AD specifies otherwise.              12,800 Rue de l’Avenir, Mirabel, Quebec               collapse of the landing gear.
                                              (i) Boeing Special Attention Service                  J7J1R4; telephone (450) 437–2862 or                      The NPRM was prompted by AD No.
                                           Bulletin 777–28–0078, Revision 3, dated                  (800) 363–8023; fax (450) 433–0272; or                CF–2017–02, dated January 16, 2017,
                                           December 19, 2017.                                       at http://www.bellcustomer.com/files/.                issued by Transport Canada, which is
                                              (ii) Reserved.                                        You may review the referenced service                 the aviation authority for Canada, to
                                              (3) For service information identified in                                                                   correct an unsafe condition for Bell
                                           this AD, contact Boeing Commercial                       information at the FAA, Office of the
                                                                                                    Regional Counsel, Southwest Region,                   Model 429 helicopters, S/N 57150,
                                           Airplanes, Attention: Contractual & Data
                                           Services (C&DS), 2600 Westminster Blvd.,                 10101 Hillwood Pkwy, Room 6N–321,                     57168, 57176, 57210, 57211 through
                                           MC 110–SK57, Seal Beach, CA 90740–5600;                  Fort Worth, TX 76177. It is also                      57216, 57265, 57266, 57267, and 57287.
                                           telephone 562–797–1717; internet https://                available on the internet at http://                  Transport Canada advises that forward
                                           www.myboeingfleet.com.                                   www.regulations.gov by searching for                  spars P/N 429–031–213–103 and 429–
                                              (4) You may view this service information             and locating Docket No. FAA–2017–                     031–213–104 and actuator fitting
                                           at the FAA, Transport Standards Branch,                                                                        assembly P/N 429–031–222–101 and
                                           2200 South 216th St., Des Moines, WA. For
                                                                                                    0757.
                                                                                                                                                          429–031–222–102 have life limits of
                                           information on the availability of this                  Examining the AD Docket
                                           material at the FAA, call 206–231–3195.
                                                                                                                                                          30,000 and 19,000 Retirement Index
                                              (5) You may view this service information               You may examine the AD docket on                    Numbers, respectively. However,
                                           that is incorporated by reference at the                 the internet at http://                               Transport Canada states these parts are
                                           National Archives and Records                            www.regulations.gov by searching for                  not serialized, and therefore their
                                           Administration (NARA). For information on                and locating Docket No. FAA–2017–                     accumulated usage is difficult to track,
                                           the availability of this material at NARA, call          0757; or in person at Docket Operations               which creates a risk that these parts
                                           202–741–6030, or go to: http://                                                                                could remain in service beyond their
                                                                                                    between 9 a.m. and 5 p.m., Monday
                                           www.archives.gov/federal-register/cfr/ibr-
                                           locations.html.                                          through Friday, except Federal holidays.              life limits. This condition could result
                                                                                                    The AD docket contains this AD, the                   in failure of the part.
                                             Issued in Des Moines, Washington, on June              Transport Canada Civil Aviation
                                           29, 2018.                                                                                                      Comments
                                                                                                    (Transport Canada) AD, any
                                           Jeffrey E. Duven,                                                                                                We gave the public the opportunity to
                                                                                                    incorporated-by-reference service
                                           Director, System Oversight Division, Aircraft            information, the economic evaluation,                 participate in developing this AD, but
                                           Certification Service.                                                                                         we received no comments on the NPRM.
                                                                                                    any comments received, and other
                                           [FR Doc. 2018–14702 Filed 7–11–18; 8:45 am]              information. The street address for                   FAA’s Determination
                                           BILLING CODE 4910–13–P                                   Docket Operations (phone: 800–647–
                                                                                                                                                            These helicopters have been approved
                                                                                                    5527) is U.S. Department of
                                                                                                                                                          by the aviation authority of Canada and
                                                                                                    Transportation, Docket Operations, M–
                                           DEPARTMENT OF TRANSPORTATION                                                                                   are approved for operation in the United
                                                                                                    30, West Building Ground Floor, Room
                                                                                                                                                          States. Pursuant to our bilateral
                                           Federal Aviation Administration                          W12–140, 1200 New Jersey Avenue SE,
                                                                                                                                                          agreement with Canada, Transport
                                                                                                    Washington, DC 20590.
                                                                                                                                                          Canada, its technical representative, has
                                           14 CFR Part 39                                           FOR FURTHER INFORMATION CONTACT:                      notified us of the unsafe condition
                                                                                                    Helene Gandy, Aviation Safety                         described in the Transport Canada AD.
                                           [Docket No. FAA–2017–0757; Product
                                                                                                    Engineer, Regulations & Policy Section,               We are issuing this AD because we
                                           Identifier 2017–SW–022–AD; Amendment
                                           39–19327; AD 2018–14–07]                                 Rotorcraft Standards Branch, FAA,                     evaluated all information provided by
                                                                                                    10101 Hillwood Pkwy., Fort Worth, TX                  Transport Canada and determined the
                                           RIN 2120–AA64                                            76177; telephone (817) 222–5413; email                unsafe condition exists and is likely to
                                                                                                    helene.gandy@faa.gov.                                 exist or develop on other helicopters of
                                           Airworthiness Directives; Bell
                                           Helicopter Textron Canada Limited                        SUPPLEMENTARY INFORMATION:                            these same type designs and that air
                                           Helicopters                                              Discussion                                            safety and the public interest require
                                                                                                                                                          adopting the AD requirements as
                                           AGENCY:  Federal Aviation                                  On January 26, 2018, at 83 FR 3628,                 proposed.
                                           Administration (FAA), DOT.                               the Federal Register published our
                                           ACTION: Final rule.                                      notice of proposed rulemaking (NPRM),                 Differences Between This AD and the
                                                                                                    which proposed to amend 14 CFR part                   Transport Canada AD
                                           SUMMARY:  We are adopting a new                          39 by adding an AD that would apply                      The Transport Canada AD requires
                                           airworthiness directive (AD) for certain                 to Bell Model 429 helicopters, serial                 compliance within 12 months from its
                                           serial numbered Bell Helicopter Textron                  number (S/N) 57150, 57168, 57176,                     effective date, unless already
                                           Canada Limited (BHTC) Model 429                          57210 through 57216, 57265, 57266,                    accomplished. This AD requires
                                           helicopters. This AD requires marking a                  57267, and 57287, with a forward spar                 compliance within 800 hours time-in-
                                           serial number on life-limited forward                    part number (P/N) 429–031–213–103 or                  service.
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                                           spars and actuator fitting assemblies.                   429–031–213–104 or actuator fitting
                                           The actions of this AD are intended to                   assembly P/N 429–031–222–101 or 429–                  Related Service Information Under 1
                                           prevent an unsafe condition on these                     031–222–102 installed.                                CFR Part 51
                                           products.                                                  The NPRM proposed to require                          We reviewed Bell Helicopter Alert
                                           DATES: This AD is effective August 16,                   marking a serial number on life-limited               Service Bulletin 429–16–34, dated
                                           2018.                                                    forward spars and actuator fitting                    November 10, 2016, which specifies


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Document Created: 2018-11-06 10:22:02
Document Modified: 2018-11-06 10:22:02
CategoryRegulatory Information
CollectionFederal Register
sudoc ClassAE 2.7:
GS 4.107:
AE 2.106:
PublisherOffice of the Federal Register, National Archives and Records Administration
SectionRules and Regulations
ActionFinal rule; request for comments.
DatesThis AD is effective July 27, 2018.
ContactKevin Nguyen, Aerospace Engineer, Propulsion Section, FAA, Seattle ACO Branch, 2200 South 216th St., Des Moines, WA 98198; phone and fax: 206-231-3555; email: [email protected]
FR Citation83 FR 32198 
RIN Number2120-AA64
CFR AssociatedAir Transportation; Aircraft; Aviation Safety; Incorporation by Reference and Safety

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