
[Federal Register Volume 82, Number 160 (Monday, August 21, 2017)]
[Proposed Rules]
[Pages 39545-39549]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2017-16570]


 ========================================================================
 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. 160 / Monday, August 21, 2017 / 
Proposed Rules  

[[Page 39545]]



DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2016-4219; Product Identifier 2015-NM-169-AD]
RIN 2120-AA64


Airworthiness Directives; The Boeing Company Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Supplemental notice of proposed rulemaking (SNPRM); reopening 
of comment period.

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

SUMMARY: We are revising an earlier proposal for certain The Boeing 
Company Model 777 airplanes. This action revises the notice of proposed 
rulemaking (NPRM) by adding an inspection to determine a part number 
and to incorporate an airworthiness limitation (AWL) into the 
maintenance or inspection program. This action also revises the NPRM by 
specifying a new version of the airline information management system 
(AIMS) software for airplanes equipped with AIMS-2 software. We are 
proposing this Airworthiness Directive (AD) to address the unsafe 
condition on these products. Since these actions impose an additional 
burden over that proposed in the NPRM, we are reopening the comment 
period to allow the public the chance to comment on these proposed 
changes.

DATES: The comment period for the NPRM published in the Federal 
Register on March 8, 2016 (81 FR 12039), is reopened.
    We must receive comments on this SNPRM by October 5, 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: U.S. Department of Transportation, Docket 
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New 
Jersey Avenue SE., Washington, DC 20590, between 9 a.m. and 5 p.m., 
Monday through Friday, except Federal holidays.
    For service information identified in this SNPRM, 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-2016-4219.

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-2016-
4219; 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: David Lee, Aerospace Engineer, 
Propulsion Section, FAA, Seattle ACO Branch, 1601 Lind Avenue SW., 
Renton, WA 98057-3356; phone: 425-917-6497; fax: 425-917-6590; email: 
david.a.lee@faa.gov.

SUPPLEMENTARY INFORMATION: 

Comments Invited

    We invite you to send any written relevant data, views, or 
arguments about this proposal. Send your comments to an address listed 
under the ADDRESSES section. Include ``Docket No. FAA-2016-4219; 
Product Identifier 2015-NM-169-AD'' at the beginning of your comments. 
We specifically invite comments on the overall regulatory, economic, 
environmental, and energy aspects of this SNPRM. We will consider all 
comments received by the closing date and may amend this SNPRM because 
of those comments.
    We will post all comments we receive, without change, to http://www.regulations.gov, including any personal information you provide. We 
will also post a report summarizing each substantive verbal contact we 
receive about this proposed AD.

Discussion

    We issued an NPRM to amend 14 CFR part 39 by adding an AD that 
would apply to certain The Boeing Company Model 777 airplanes. The NPRM 
published in the Federal Register on March 8, 2016 (81 FR 12039). The 
NPRM was prompted by reports of latently failed fuel shutoff valves 
discovered during fuel filter replacement. The NPRM proposed to require 
replacing certain motor-operated valve (MOV) actuators with new MOV 
actuators on both AIMS-1- and AIMS-2-equipped airplanes, or installing 
a newer software version on AIMS-2-equipped airplanes.

Actions Since the NPRM Was Issued

    Since we issued the NPRM, several operators commented on issues 
with the installation of AIMS-2 Blockpoint V17.1 software on certain 
airplane configurations and under certain operating conditions. Boeing 
recently released version 17A of this software to address these issues. 
We have determined that it is necessary to mandate the use of AIMS-2 
Blockpoint version 17A to address the identified unsafe condition for 
the affected airplanes.
    In addition, on November 17, 2016, we approved an alternative 
method of compliance (AMOC) Notice 777-28A0034 AMOC 02, via FAA letter 
140S-16-180. This AMOC identified changes to Boeing Service Bulletin 
777-28A0034, Revision 3, dated September 25, 2015, which corrects the 
description of Group 4 airplanes. This AMOC, when combined with the 
previously approved AMOCs for Boeing Service Bulletin 777-28A0034, 
Revision 3, dated September 25, 2015, applies to the accomplishment of 
paragraphs (g), (h),

[[Page 39546]]

(k), and (l) of AD 2013-05-03, Amendment 39-17375 (78 FR 17290, March 
21, 2013) (``AD 2013-05-03''), which requires inspecting and replacing 
certain MOV actuators in the main and center fuel tanks on certain The 
Boeing Company Model 777-200, -200LR, -300, and -300ER series 
airplanes.
    In the NPRM, we included costs for doing an inspection to identify 
the part number of the MOV actuators. However, we inadvertently left 
out the requirement for this inspection in the NPRM. We have added this 
requirement to paragraph (g) of this proposed AD.

Comments

    We gave the public the opportunity to comment on the NPRM. The 
following presents the comments received on the NPRM and the FAA's 
response to each comment.

Support for the NPRM

    The Air Line Pilots Association, International, expressed support 
for the NPRM.

Request To Terminate Part of an Earlier AD

    Boeing, All Nippon Airways (ANA), and United Airlines (UAL) all 
requested that we include a paragraph stating that the proposed AD (in 
the NPRM) is terminating action to all requirements of AD 2015-19-01, 
Amendment 39-18264 (80 FR 55521, September 16, 2015) (``AD 2015-19-
01''), which required operators to revise the maintenance or inspection 
program, as applicable, to add airworthiness limitation 28-AWL-MOV. 
Boeing stated that AD 2015-19-01 also required repetitive inspections 
of MOVs for Boeing Model 777 airplanes with fuel spar actuators having 
certain part numbers. Boeing noted that the proposed AD (in the NPRM) 
would require replacing those fuel spar actuators or upgrading the 
AIMS-2 software. Boeing concluded that by complying with the actions of 
the proposed AD (in the NPRM), operators are also complying with all 
requirements of AD 2015-19-01.
    We agree with the commenters' request to specify a condition that 
would terminate the requirements of AD 2015-19-01. However, we find it 
necessary to add another step to this proposed AD before the 
requirements of AD 2015-19-01 can be terminated. We understand that 
operators typically manage a single maintenance or inspection program 
for their entire fleets, rather than for individual airplanes. If 
operators are allowed to remove the AWL mandated by AD 2015-19-01 
before the actions in the proposed AD are completed on the entire 
fleet, the AWL and its associated repetitive inspections could be 
inadvertently removed from individual airplanes in the fleet before the 
unsafe condition is mitigated.
    In addition, we consider that an additional action is necessary to 
prevent an airplane from being modified to a pre-AD condition. This 
proposed AD would prohibit the installation of MOV actuator P/N 
MA30A1001 (Boeing P/N S343T003-66) or MA20A2027 (Boeing P/N S343T003-
56) at the fuel spar valve locations. However, these two part numbers 
can still be installed at other locations (as their failure is of 
economic impact only), and could be inadvertently re-installed at the 
fuel spar valve locations. To address this concern, we have added 
paragraph (h) to this AD to specify a requirement for the incorporation 
of a new AWL. Other than the prohibition, there is no maintenance 
action associated with the new AWL.
    The incorporation of the new AWL would be required after the 
accomplishment of the actions specified by paragraph (g) of the 
proposed AD on all affected airplanes in an operator's fleet, but 
within 24 months after the effective date of this AD. If an operator 
accomplishes all required actions on all affected airplanes in the 
fleet before the end of the 24-month compliance time, the operator has 
an option to incorporate the new AWL at that time, or at a later time, 
but before the end of the 24-month compliance time. This option is 
intended to allow continued operation of an airplane if an airplane 
having the pre-AD configuration is introduced into an operator's fleet 
before the end of the compliance time, but after the accomplishment of 
the required actions on all other airplanes in the fleet.
    We have added paragraphs (h) (specifying incorporation of the AWL) 
and (i) (stating that accomplishing the actions in this AD terminates 
all requirements of AD 2015-19-01) to this proposed AD and redesignated 
subsequent paragraphs accordingly. We have also revised paragraph (b) 
of this proposed AD to indicate that this proposed AD would affect AD 
2015-19-01.

Request To Allow Repetitive Inspections as an AMOC to Parts Replacement

    ANA requested that we allow the repetitive inspections specified in 
AD 2015-19-01 in lieu of the actions specified in paragraph (g) of the 
proposed AD (in the NPRM). ANA stated that both AD 2015-19-01 and the 
proposed AD (in the NPRM) can detect and correct latent failure of the 
fuel shutoff valve, and the purpose of both ADs is the same.
    We disagree with the request because the actions in AD 2015-19-01 
were intended to mitigate the unsafe condition while a permanent 
solution was being developed. A permanent design modification is 
preferable to ongoing inspections, since it eliminates the potential 
latency failure period between inspections. The actions required by 
this proposed AD are intended to eliminate the unsafe condition. We 
have not changed this proposed AD regarding this issue.

Request To Remove or Revise Service Information

    American Airlines (AAL) and Japan Airlines (JAL) requested that we 
revise the proposed AD (in the NPRM) to allow installation of Version 
17.1 or a later approved version of the AIMS-2 software, or to remove 
the requirement to update the AIMS-2 software in accordance with Boeing 
Service Bulletin 777-31-0227, Revision 1, dated August 12, 2015. JAL 
noted that incorporation of this service information could cause the 
navigation and multifunction displays to momentarily go blank during 
takeoff and landing. AAL added that incorporation of this service 
information on airplanes equipped with VHF radios only capable of Mode 
0 will make the VHF datalink inoperable. AAL noted that the proposed 
solution from Boeing is to replace the VHF radio, creating an 
additional financial burden. AAL stated that Boeing was planning on 
addressing this issue through a service bulletin related to AIMS-2 
Blockpoint Version 17A. AAL also asked for clarification regarding what 
constitutes a later approved software version.
    We agree with the commenters' request. The installation of AIMS-2 
Blockpoint Version 17.1 on certain airplane configurations, and under 
certain operating conditions, could allow the issues noted by AAL and 
JAL. Since we issued the NPRM, Boeing released Service Bulletin 777-31-
0218, dated September 8, 2016, which incorporates AIMS-2 Blockpoint 
Version 17A to address these issues. We have included this new service 
information in this SNPRM and revised paragraph (g)(2)(ii) of this 
proposed AD to refer to the new software version and service 
information. We have also revised paragraph (i) of this proposed AD to 
include credit for the installation of AIMS-2 Blockpoint Version 17 or 
17.1, since this software is one way to prevent the latent failure of 
the MOV actuator and works under most airplane configurations and 
operating conditions.

[[Page 39547]]

We have also revised paragraph (g)(2)(ii) of this proposed AD to 
clarify what qualifies as a later approved software version.

Request To Provide Credit

    UAL requested that paragraph (h) of the proposed AD (in the NPRM) 
be revised to provide credit for actions accomplished in accordance 
with Boeing Service Bulletin 777-28A0034, Revision 3, dated September 
25, 2015. UAL provided no justification for its request.
    We disagree because we find the requested change unnecessary. 
Paragraph (f) of this proposed AD states that the actions must be 
completed within the compliance times specified, ``unless already 
done.'' Therefore, if the actions in paragraph (g)(1) or (g)(2)(i) of 
this proposed AD are already completed in accordance with Boeing 
Service Bulletin 777-28A0034, Revision 3, dated September 25, 2015, no 
credit is needed for these actions. The purpose of paragraph (j) of 
this proposed AD (paragraph (h) in the proposed AD (in the NPRM)) is to 
provide credit for actions completed on or before the effective date of 
the AD using earlier versions of service information. We have not 
changed this proposed AD regarding this issue.

Request for Approval of an AMOC to AD 2013-05-03

    ANA requested that we allow the actions of the proposed AD (in the 
NPRM) to be an approved AMOC to AD 2013-05-03. ANA stated that AD 2013-
05-03 requires operators to replace an MOV actuator with a new or 
serviceable actuator having part number (P/N) MA30A1001 or with an MOV 
actuator meeting certain criteria. ANA noted that the proposed AD (in 
the NPRM) would require replacing MOV actuators with P/N MA30A1017, a 
different requirement than in AD 2013-05-03.
    We disagree with the commenter's request. We have already approved 
the use of Boeing Service Bulletin 777-28A0034, Revision 3, dated 
September 25, 2015, as an AMOC to the requirements of paragraph (h) of 
AD 2013-05-03 to replace an affected MOV actuator, as stated therein. 
Therefore, it is not necessary to restate this AMOC in this proposed 
AD. We have not changed this proposed AD regarding this issue.

Request To Extend the Compliance Time

    ANA and JAL both requested that we extend the compliance time of 
the proposed AD (in the NPRM). JAL requested that the compliance time 
be extended from 24 months to 60 months because AD 2016-04-20, 
Amendment 39-18414 (81 FR 10460, March 1, 2016) (``AD 2016-04-20'') and 
AD 2016-21-05, Amendment 39-18686 (81 FR 79384, November 14, 2016) 
(``AD 2016-21-05'') also require the installation of MOV actuator P/N 
MA30A1017 (at different locations on the airplane and/or different 
airplane models), but allow 60 months for the installation. ANA 
requested that the compliance time be extended to 8 years, because 
Boeing Service Bulletin 737-28-1314 specifies installation of the same 
MOV actuator P/N MA30A1017 (on different airplane models) with a 
compliance time of 8 years. ANA stated that because the same part is 
used on Boeing Model 737, 767, and 777 airplanes, the vendor will not 
be able to supply enough MOV actuators to complete the proposed actions 
within 24 months on Model 777 airplanes.
    We disagree with the requests. The compliance time of 24 months was 
coordinated with Boeing as a practical compliance time for Model 777 
airplanes. We may consider providing AMOC approval if the Boeing vendor 
of the MOV actuators is unable to provide an adequate supply for 
operators to comply with these actions in the applicable compliance 
times.
    Further, AD 2013-05-03 requires the removal of MOV actuator P/N 
MA20A1001-1 (S343T003-39) on both AIMS-1 and AIMS-2 airplanes, with the 
exception that the MOV actuator does not have to be removed from the 
fuel spar valve locations on airplanes on which AIMS-1 is installed. 
Although AD 2016-04-20 and AD 2016-21-05 provide instructions to 
replace the fuel spar valve, they do not require that the MOV actuator 
only be replaced with P/N MA30A1017. MOV actuators with P/N MA20A2027 
(S343T003-56) and MA30A1001 (S343T003-66) have been determined to be 
prone to latent failure, so unless the airplane is equipped with AIMS-2 
Blockpoint Version 17 or later (which mitigates the unsafe condition), 
we are mandating that only P/N MA30A1017 (S343T003-76) be installed at 
the left and right fuel spar valve locations. We have not changed this 
proposed AD regarding this issue.

Related Service Information Under 1 CFR Part 51

    We reviewed Boeing Service Bulletin 777-28A0034, Revision 3, dated 
September 25, 2015. This service information describes procedures for, 
among other things, inspection and replacement of the main and center 
fuel tank valve actuators.
    We also reviewed Boeing Service Bulletin 777-31-0218, dated 
September 8, 2016. This service information describes procedures for 
installing the AIMS-2, Blockpoint Version 17A software upgrade.
    This service information is reasonably available because the 
interested parties have access to it through their normal course of 
business or by the means identified in the ADDRESSES section.

FAA's Determination

    We are proposing this SNPRM 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. 
Certain changes described above expand the scope of the NPRM. As a 
result, we have determined that it is necessary to reopen the comment 
period to provide additional opportunity for the public to comment on 
this SNPRM.

Proposed Requirements of This SNPRM

    This SNPRM would require accomplishing the actions specified in the 
service information described previously, except as discussed under 
``Differences Between this SNPRM and the Service Information.'' 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-2016-4219.

Differences Between This SNPRM and the Service Information

    We have excluded line numbers 1165 and subsequent from the 
applicability section of this proposed AD as these airplanes were 
manufactured with AIMS-2 Blockpoint Version 17 or higher installed, and 
are not affected by the unsafe condition.

Costs of Compliance

    We estimate that this proposed AD affects 154 airplanes of U.S. 
registry. We estimate the following costs to comply with this proposed 
AD:

[[Page 39548]]



                                                 Estimated Costs
----------------------------------------------------------------------------------------------------------------
                                                                       Cost per
             Action                  Labor cost       Parts cost        product        Cost on U.S.  operators
----------------------------------------------------------------------------------------------------------------
Inspection.....................  1 work-hour x $85              $0             $85  $13,090.
                                  per hour = $85.
Replacement of two MOV           5 work-hours x             12,000          12,425  Up to $422,450.
 actuators without fuel tank      $85 per hour =
 access.                          $425.
AIMS-2, Blockpoint Version 17A,  7 work-hours x                  0             595  Up to $71,400.
 installation.                    $85 per hour =
                                  $595.
28-AWL-MOVA incorporation......  1 work-hour x $85               0              85  $13,090.
                                  per 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:

    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-2016-4219; Product Identifier 
2015-NM-169-AD.

(a) Comments Due Date

    We must receive comments by October 5, 2017.

(b) Affected ADs

    This AD affects AD 2015-19-01, Amendment 39-18264 (80 FR 55521, 
September 16, 2015).

(c) Applicability

    This AD applies to The Boeing Company Model 777-200, 777-200LR, 
777-300, 777-300ER, and 777F series airplanes, certificated in any 
category, excluding line numbers 1165 and subsequent.

(d) Subject

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

(e) Unsafe Condition

    This AD was prompted by reports of latently failed fuel shutoff 
valves discovered during fuel filter replacement. We are issuing 
this AD to prevent latent failure of the fuel shutoff valve to the 
engine, which could result in the inability to terminate fuel flow 
to the engine and, in the case of an engine fire, could lead to wing 
failure.

(f) Compliance

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

(g) Inspection and Replacement

    Within 24 months after the effective date of this AD: Do an 
inspection to determine the part numbers (P/N) of the motor-operated 
valve (MOV) actuators of the fuel shutoff valves for the left and 
right engines, in accordance with the Accomplishment Instructions of 
Boeing Service Bulletin 777-28A0034, Revision 3, dated September 25, 
2015. A review of airplane maintenance records is acceptable in lieu 
of this inspection if the part number can be conclusively determined 
from that review. If any MOV actuator not having P/N MA30A1017 
(Boeing P/N S343T003-76), is found, do the actions in paragraphs 
(g)(1) or (g)(2) of this AD, as applicable.
    (1) For airplanes having airplane information management system 
(AIMS) 1 installed: Within 24 months after the effective date of 
this AD, install new engine fuel spar MOV actuators having part 
number (P/N) MA30A1017, in accordance with the Accomplishment 
Instructions of Boeing Service Bulletin 777-28A0034, Revision 3, 
dated September 25, 2015.
    (2) For airplanes having AIMS-2, Blockpoint Version 16 or 
earlier, installed: Within 24 months after the effective date of 
this AD, do the actions specified in paragraph (g)(2)(i) or 
(g)(2)(ii) of this AD.
    (i) Install new engine fuel spar MOV actuators having P/N 
MA30A1017, in accordance with the Accomplishment Instructions of 
Boeing Service Bulletin 777-28A0034, Revision 3, dated September 25, 
2015.
    (ii) Install AIMS-2, Blockpoint Version 17A or later-approved 
version, in accordance with the Accomplishment Instructions of 
Boeing Service Bulletin 777-31-0218, dated September 8, 2016. Later-
approved versions of the software are only those Boeing software 
versions that are approved as a replacement for AIMS-2, Blockpoint 
Version 17A, and approved as part of the type design by the FAA 
after issuance of Boeing Service Bulletin 777-31-0218, dated 
September 8, 2016.

[[Page 39549]]

(h) Revision of Maintenance or Inspection Program

    Within 24 months after the effective date of this AD, and after 
accomplishing the actions required by paragraph (g) of this AD on 
all airplanes in an operator's fleet, as applicable, revise the 
maintenance or inspection program, as applicable, to add 
Airworthiness Limitation (AWL) 28-AWL-MOVA by incorporating the 
information specified in figure 1 to paragraph (h) of this AD into 
the Airworthiness Limitations Section of the Instructions for 
Continued Airworthiness.

 Figure 1 to Paragraph (h) of this AD--AWL for Engine Fuel Shutoff Valve
           (Fuel Spar Valve) Actuator Installation Prohibition
------------------------------------------------------------------------
            AWL No.               Applicability         Description
------------------------------------------------------------------------
28-AWL-MOVA...................  (1) Airplanes      Motor Operator Valve
                                 with AIMS-1        (MOV) Actuator--
                                 system, or (2)     Prohibition of
                                 Airplanes with     Installation of
                                 AIMS-2             Specific Part
                                 BlockPoint (BP)    Numbers.
                                 v 16 and earlier  Installation of MOV
                                 software.          actuator part number
                                                    (P/N) MA30A1001
                                                    (Boeing P/N S343T003-
                                                    66) and P/N
                                                    MA20A2027 (Boeing P/
                                                    N S343T003-56) is
                                                    prohibited at the
                                                    following positions:
                                                   1. Left engine fuel
                                                    shutoff spar valve
                                                    position.
                                                   2. Right engine fuel
                                                    shutoff spar valve
                                                    position.
------------------------------------------------------------------------

(i) Terminating Action for AD 2015-19-01

    Accomplishment of the actions required by paragraphs (g) and (h) 
of this AD terminates all requirements of AD 2015-19-01.

(j) Credit for Previous Actions

    This paragraph provides credit for actions specified in 
paragraph (g)(2)(ii) of this AD, if AIMS-2 Blockpoint Version 17 or 
17.1 was installed before the effective date of this AD either in 
production or using Boeing Special Attention Service Bulletin 777-
31-0227, dated November 7, 2014; or Revision 1, dated August 12, 
2015.

(k) 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 (l)(1) 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, 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 
(k)(4)(i) and (k)(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. 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

(l) Related Information

    (1) For more information about this AD, contact David Lee, 
Aerospace Engineer, Propulsion Section, FAA, Seattle ACO Branch, 
1601 Lind Avenue SW., Renton, WA 98057-3356; phone: 425-917-6497; 
fax: 425-917-6590; email: david.a.lee@faa.gov.
    (2) For service information identified in this AD, contact 
Boeing Commercial Airplanes, Attention: Contractual & Data Services 
(C&DS), 2600 Westminster Blvd., MC 110 SK57, Seal Beach, CA 90740-
5600; telephone 562 797 1717; Internet https://www.myboeingfleet.com. You may view this referenced service 
information at the FAA, Transport Standards Branch, 1601 Lind Avenue 
SW., Renton, WA. For information on the availability of this 
material at the FAA, call 425-227-1221.

    Issued in Renton, Washington, on July 28, 2017.
John P. Piccola, Jr.,
Acting Director, System Oversight Division, Aircraft Certification 
Service.
[FR Doc. 2017-16570 Filed 8-18-17; 8:45 am]
 BILLING CODE 4910-13-P


