[Federal Register Volume 83, Number 248 (Friday, December 28, 2018)]
[Rules and Regulations]
[Pages 67038-67043]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2018-28075]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2016-4219; Product Identifier 2015-NM-169-AD; Amendment 
39-19535; AD 2018-26-05]
RIN 2120-AA64


Airworthiness Directives; The Boeing Company Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

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SUMMARY: We are adopting a new airworthiness directive (AD) for certain 
The Boeing Company Model 777 airplanes. This AD was prompted by reports 
of latently failed engine fuel shutoff spar valves discovered during 
fuel filter replacement. This AD requires inspecting to determine the 
part numbers (P/Ns) of the motor-operated valve (MOV) actuators at the 
engine fuel shutoff spar valve positions, installing MOV actuators 
having a certain acceptable part number or software if necessary, and 
revising the maintenance or inspection program to add a new 
airworthiness limitation. We are issuing this AD to address the unsafe 
condition on these products.

DATES: This AD is effective February 1, 2019.
    The Director of the Federal Register approved the incorporation by 
reference of certain publications listed in this AD as of February 1, 
2019.

ADDRESSES: For service information identified in this final rule, 
contact Boeing Commercial Airplanes, Attention: Contractual & Data 
Services (C&DS), 2600 Westminster Blvd., MC 110-SK57, Seal Beach, CA 
90740-5600; telephone 562-797-1717; internet https://www.myboeingfleet.com. You may view this 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-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 Docket Operations between 9 a.m. and 5 p.m., 
Monday through Friday, except Federal holidays. The AD docket contains 
this final rule, the regulatory evaluation, any comments received, and 
other information. The address for Docket Operations (phone: 800-647-
5527) is U.S. Department of Transportation, Docket Operations, M-30, 
West Building Ground Floor, Room W12-140, 1200 New Jersey Avenue SE, 
Washington, DC 20590.

FOR FURTHER INFORMATION CONTACT: 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: 
[email protected].

SUPPLEMENTARY INFORMATION: 

[[Page 67039]]

Discussion

    We issued a notice of proposed rulemaking (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 engine fuel shutoff spar valves discovered during fuel 
filter replacement. The NPRM proposed to require replacing certain MOV 
actuators with MOV actuators having a certain acceptable part number on 
both airline information management system (AIMS) Version 1- and 2-
equipped airplanes, or installing a newer software version on AIMS 
Version 2-equipped airplanes.
    We issued a SNPRM to amend 14 CFR part 39 by adding an AD that 
would apply to certain The Boeing Company Model 777 airplanes. The 
SNPRM published in the Federal Register on August 21, 2017 (82 FR 
39545). We issued the SNPRM to add a part number inspection, add an 
AWL, and specify new AIMS software.
    We are issuing this AD to address latent failure of the fuel 
shutoff spar 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.

Comments

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

Request To Omit Inspection Requirement

    American Airlines (American) requested that we revise paragraph (g) 
of the proposed AD (in the SNPRM) to omit the requirement to inspect 
for the MOV actuator part numbers, and to reflect only the essential 
compliance requirements as stated in paragraphs (g)(1) and (g)(2) of 
the proposed AD (in the SNPRM) (the conditional requirements that 
depend on the part number found). The commenter stated that the 
inspection is not necessary to accomplish any of the compliance options 
and adds no value to the process.
    We disagree with the request. The MOV actuator is a rotable part. 
Several previously approved and existing interchangeable MOV actuator 
part numbers may be installed at the engine fuel shutoff spar valve 
positions. The MOV actuator installed at the engine fuel shutoff spar 
valve positions at the time of airplane manufacture may have been later 
replaced by an MOV actuator of a different part number. Because an 
unsafe condition exists with certain part numbers, we have determined 
that it is necessary to control the method by which an operator may 
determine what part number is installed. In the absence of such a 
control, an operator might simply assume that the part number delivered 
with the airplane is still in place. The most positive method to verify 
the installed part number is to inspect the part. Alternatively, as 
stated in paragraph (g) of this AD, the FAA will accept verification 
through a maintenance records check if the records positively show the 
installed part number. We have not changed the AD regarding this issue.

Request To Incorporate AWL After MOV Actuator Installation

    American requested that we revise paragraph (g)(1) of the proposed 
AD (in the SNPRM) to include incorporation of new airworthiness 
limitation (AWL) 28-AWL-MOVA, which is specified in paragraph (h) of 
the proposed AD (in the SNPRM).
    We disagree with the request. The commenter did not provide 
rationale for the requested change, but we infer their request was to 
have all required actions within paragraph (g) of this AD. We have 
determined that it is better to structure the AD by separating required 
actions that are discretely different into separate paragraphs. As 
such, all required actions associated with inspecting and replacing the 
affected MOV actuators are in paragraph (g) of this AD and all required 
actions associated with the AWL revisions are in paragraph (h) of this 
AD. Therefore, we find it unnecessary to change this AD regarding this 
issue.

Request To Clarify Airplanes Subject to Inspection

    Cathay Pacific noted a discrepancy in Boeing Service Bulletin 777-
28A0034, Revision 3, dated September 25, 2015. Some airplanes that 
subsequently installed AIMS-2 Block Point (BP) Version 17A software may 
no longer match the conditions for the service bulletin groups, and do 
not fit the criteria of either paragraph (g)(1) or (g)(2) of the 
proposed AD (in the SNPRM). Cathay Pacific therefore requested that we 
revise paragraph (g) of the proposed AD (in the SNPRM) to clarify that 
the inspection is required only on airplanes without AIMS-2 BP Version 
17A software. The commenter reported that Boeing confirmed that the 
service bulletin will be revised to address this discrepancy.
    We agree with the request. We had intended to exclude the 
inspection requirement for airplanes with AIMS-2 BP Version 17A 
software installed. We have therefore revised paragraph (g) of this AD 
to also state that no further action is required by paragraph (g) of 
this AD if AIMS-2 BP Version 17 or later software is installed, which 
also include AIMS-2 BP Versions 17.1 and 17A.

Request To Allow Alternative Service Information

    Delta Air Lines (Delta) requested that we revise paragraph 
(g)(2)(ii) of the proposed AD (in the SNPRM) to allow Boeing Service 
Bulletin 777-31-0275, dated June 8, 2017, as another method to use to 
install AIMS-2 BP Version 17A software or later-approved version. Delta 
explained that this service bulletin describes procedures for modifying 
the hardware and software related to converting from AIMS-1 to AIMS-2 
software, including AIMS-2 BP Version 17A software. Delta added that 
Boeing Service Bulletin 777-31-0275 specifies installation of the same 
software as that specified in Boeing Service Bulletin 777-31-0218, and 
provides an equivalent level of safety to that of the SNPRM.
    We partially agree with the request. We agree that installation of 
AIMS-2 BP Version 17A and later-approved software is an acceptable 
alternative to replacing the MOV actuator, because that software allows 
failure of any of the previously approved MOV actuator part numbers to 
be detected and annunciated by the airplane display system. However, we 
find it unnecessary to revise paragraph (g)(2)(ii) of this AD to add 
another acceptable method of compliance (Boeing Service Bulletin 777-
31-0275) for the installation of AIMS-2 BP Version 17A software during 
conversion of an airplane from AIMS-1 to AIMS-2 software. Instead, we 
have revised paragraph (g) of this AD to clarify that no further action 
is required by paragraph (g) of this AD if AIMS-2 BP Version 17 or 
later software is installed.

Request To Provide Credit for AIMS-2 BP Version 17A Software

    American and Delta requested that we revise paragraph (j) of the 
proposed AD (in the SNPRM) to provide credit for installation of AIMS-2 
BP Version 17A software. Delta noted a conflict between the ``Actions 
Since the NPRM was Issued'' section of the SNPRM (which specified the 
proposed AD would require installing AIMS-2 BP Version 17A software) 
and paragraph (j) of the proposed AD (in the SNPRM) (which

[[Page 67040]]

specified credit for paragraph (g)(2)(ii) when AIMS-2 BP Version 17 or 
17.1 software was installed before the effective date of this AD).
    We agree to clarify that we have achieved similar results to the 
commenters request since we have clarified the multiple references to 
AIMS-2 BP Version 17 software in this AD, and that we have revised this 
AD to exclude airplanes with AIMS-2 BP Version 17 or later software 
installed from the requirements of paragraph (g) of this AD. Therefore, 
we have not changed paragraph (j) and have determined that no further 
change to the AD is necessary regarding this issue.

Request To Remove AWL Requirement

    Boeing requested that we revise paragraph (h) of the proposed AD 
(in the SNPRM) to remove the requirement to incorporate the new AWL. 
Boeing noted that paragraphs (g)(1) and (g)(2)(i) of the proposed AD 
(in the SNPRM) would require inspection of all affected airplanes and 
replacement of all MOV actuators at the engine fuel shutoff spar valve 
positions with MOV actuators having P/N MA30A1017 (Boeing P/N S343T003-
76). Boeing asserted that those proposed requirements would therefore 
be redundant with the proposed requirement of paragraph (h) of the 
proposed AD (in the SNPRM), since the AWL prohibits installation of 
MA20A2027 (Boeing P/N S343T003-56) and P/N MA30A1001 (Boeing P/N 
S343T003-66) MOV actuators at the engine fuel shutoff spar valve 
positions.
    We disagree with the request. As previously explained in the SNPRM, 
the new AWL is necessary to prevent an airplane from being modified to 
a pre-AD condition. Although the AWL would prohibit installation of the 
MOV actuators at the engine fuel shutoff spar valve positions, these 
two MOV actuator part numbers may still be installed at other locations 
(as their failure in the other locations is of economic impact only), 
and could be inadvertently re-installed at the engine fuel shutoff spar 
valve positions. To address this concern, we added paragraph (h) to the 
proposed AD (in the SNPRM) to specify the incorporation of the new AWL. 
We have not changed this AD regarding this issue.

Request To Add Instructions for Maintenance Program Revision

    Delta recommended that we add details on how to conduct the 
maintenance or inspection program, such as inspection methods and 
repetitive intervals, in order to clarify the proposed requirements of 
paragraph (h) of the proposed AD (in the SNPRM). That proposed 
requirement would require revising the maintenance program to 
incorporate a new airworthiness limitation prohibiting the installation 
of certain MOV actuators, and to maintain this limitation in the 
operator's fleet maintenance program. Delta inferred that the purpose 
of the proposed requirement is to ensure that P/Ns MA30A1001 and 
MA20A2027 are not installed in the two engine fuel shutoff spar valve 
positions once the requirements of paragraph (g) of the AD have been 
complied with.
    Delta stated that the requirement to incorporate a statement 
indicating that a part is prohibited is not a maintenance program. 
Delta stated that an aircraft maintenance program is not the 
appropriate way to do this, adding that a ``parts prohibition'' 
statement (including locations--left and right engine fuel shutoff spar 
valve positions, in this case) would be more appropriate to ensure that 
a specific part number is not installed in the future. Delta stated 
that similar parts prohibition statements are included in AD 2016-04-
20, Amendment 39-18414 (81 FR 10460, March 1, 2016), and AD 2013-05-03, 
Amendment 39-17375 (78 FR 17290, March 21, 2013), such that operators 
could then add notes to the airplane illustrated parts catalog (IPC), 
aircraft maintenance manual (AMM), etc., to ensure that those parts are 
not installed at the specified location in the future.
    We disagree with the request. An AWL containing a parts prohibition 
statement for a maintenance or inspection program has been required by 
other ADs, and is appropriate in this case. Paragraph (h) of this AD 
requires only the incorporation of the AWL item into the operator's 
fleet, not specific ways to accomplish the AWL task or comply with the 
restriction. Each operator is responsible for accomplishing the AWL 
task and maintaining the AWL restriction. Although a parts prohibition 
statement could be included in the AD, we chose to mandate this 
requirement via incorporation of an AWL to be consistent with the 
requirements of AD 2015-19-01, Amendment 39-18264 (80 FR 55521, 
September 16, 2015) (``AD 2015-19-01''). AD 2015-19-01 required 
revising the existing maintenance or inspection program to include a 
new AWL that required certain actions for The Boeing Company Model 777 
airplanes with MOV actuators having P/N MA20A2027 or P/N MA30A1001 
installed at the engine fuel shutoff spar valve positions. The 
prohibited MOV actuator part numbers at the engine fuel shutoff spar 
valve positions are still physically interchangeable with the 
acceptable part numbers and may be used in other valve locations, and 
they are expected to remain in operators' parts stores for a long 
period of time. We have not changed this AD regarding this issue.

Request To Revise Compliance Time to Incorporate AWL

    Delta requested that we clarify the compliance time for 
incorporating the new AWL into the maintenance program, as specified in 
paragraph (h) of the proposed AD (in the SNPRM): 24 months after the 
effective date of the AD, and after accomplishing the actions required 
by (g). Delta recommended that the compliance time be changed to within 
24 months after the effective date of the AD or after accomplishment of 
the actions required by paragraph (g)(1) or (g)(2)(i) of the AD, 
whichever occurs first. Delta also asked that we remove the condition 
``after accomplishing the actions required by paragraph (g) of this AD 
on all airplanes in an operator's fleet.'' Delta stated that the 
current wording is unclear and appears to indicate operators must wait 
until the actions of paragraph (g) of the AD are complete on their 
Model 777 fleets before they can insert 28-AWL-MOVA into the 
maintenance program. Delta believes the FAA's intent is to put in place 
a part prohibition for MOV actuators at the engine fuel shutoff spar 
valve positions on applicable airplanes without AIMS-2 BP Version 17 
software or later version, and that when the requirements of paragraph 
(g)(2)(ii) of the AD are completed, this AWL would no longer be 
applicable.
    We agree with the request. We have revised the compliance time in 
paragraph (h) of this AD to ``within 24 months after the effective date 
of the AD.'' This allows operators to incorporate the new AWL into 
their maintenance program at any time within that 24-month period, 
without waiting until all required actions on all affected airplanes in 
the fleet are completed. This would also allow continued operation of 
an airplane if another airplane having the pre-AD configuration is 
introduced into an operator's fleet before the end of the compliance 
time, even if this were to occur after the accomplishment of the 
required actions on all other airplanes in the fleet.

Request To Exclude Model 777F Series Airplanes

    FedEx requested that we exclude Model 777F series airplanes from 
the proposed requirements of paragraphs (g), (h), and (i) of the 
proposed AD (in the SNPRM). The service information,

[[Page 67041]]

Boeing Service Bulletin 777-28A0034, Revision 3, dated September 25, 
2015, specifies that no work is necessary for airplanes in Group 7, 
which includes Model 777F series airplanes.
    We disagree with the request. Even though the commenter is correct 
in that Boeing Service Bulletin 777-28A0034, Revision 3, dated 
September 25, 2015, specifies that no work is necessary for airplanes 
in Group 7, which includes Model 777F series airplanes, the intent of 
this AD is to ensure that all airplanes identified in paragraph (c) of 
this AD, which includes Model 777F series airplanes and other Group 7 
airplanes, address the unsafe condition through compliance with the 
requirements of the AD. Compliance with the requirements of paragraph 
(g) of this AD may be accomplished by installing a certain MOV actuator 
in accordance with Boeing Service Bulletin 777-28A0034, Revision 3, 
dated September 25, 2015, or installing certain AIMS-2 BP Version 17 or 
later software in accordance with Boeing Service Bulletin 777-31-0218, 
dated September 8, 2016 (depending on configuration).
    We have clarified the options available for some of the affected 
airplanes, i.e., Group 7 airplanes with AIMS-2 BP Version 16 or earlier 
software. Specifically, if the actions specified in paragraph (g)(2)(i) 
of this AD are done, Figures 35 and 37 of Boeing Service Bulletin 777-
28A0034, Revision 3, dated September 25, 2015, can be used for 
compliance regarding installation of the MOV actuator. Operators may 
also install AIMS-2 BP Version 17A software in accordance with 
paragraph (g)(2)(ii) of this AD. It is also necessary for operators of 
affected Boeing Model 777F airplanes to incorporate the AWL 
requirements specified in paragraph (h) of this AD.

Additional Changes to AD

    The effectivity of Boeing Service Bulletin 777-28A0034, Revision 3, 
dated September 25, 2015, incorrectly categorizes airplanes in Group 4 
as only those with AIMS-1 software installed. We have confirmed with 
Boeing that Group 4 airplanes includes airplanes with AIMS-1 software 
or AIMS-2 BP Version 16 or earlier software; or AIMS-2 BP Version 17 or 
later software. The airplane variable number listing in the service 
information does include the AIMS-2 equipped airplanes. We have 
therefore clarified for the purposes of the requirements in paragraph 
(g)(2) of this AD to state that Group 4, as identified in Boeing 
Service Bulletin 777-28A0034, Revision 3, dated September 25, 2015, 
includes airplanes with AIMS-1 software or AIMS-2 BP Version 16 or 
earlier software installed.
    We have revised paragraph (i) in this AD to clarify that the 
requirements of AD 2015-19-01 may be terminated only when the 
requirements of paragraph (g) and (h) of this AD have been done on 
``all affected airplanes in an operator's fleet.''

Conclusion

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

Related Service Information Under 1 CFR Part 51

    We reviewed Boeing Service Bulletin 777-28A0034, Revision 3, dated 
September 25, 2015. This service information describes procedures for, 
among other things, inspection and replacement of the MOV actuators at 
the engine fuel shutoff spar valve positions.
    We also reviewed Boeing Service Bulletin 777-31-0218, dated 
September 8, 2016. This service information describes procedures for 
installing the AIMS-2 BP 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.

Costs of Compliance

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

                                                 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 actuators  5 work-hours x $85          12,000          12,425  Up to $422,450.
 without fuel tank access.         per hour = $425.
Installation of AIMS-2 BP         7 work-hours x $85               0             595  Up to 71,400.
 Version 17A software.             per hour = $595.
----------------------------------------------------------------------------------------------------------------

    We have determined that revising the maintenance or inspection 
program takes an average of 90 work-hours per operator, although we 
recognize that this number may vary from operator to operator. In the 
past, we have estimated that this action takes 1 work-hour per 
airplane. Since operators incorporate maintenance or inspection program 
changes for their affected fleets, we have determined that a per-
operator estimate is more accurate than a per-airplane estimate. 
Therefore, we estimate the total cost per operator to be $7,650 (90 
work-hours x $85 per work-hour).

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,

[[Page 67042]]

as authorized by FAA Order 8000.51C. In accordance with that order, 
issuance of ADs is normally a function of the Compliance and 
Airworthiness Division, but during this transition period, the 
Executive Director has delegated the authority to issue ADs applicable 
to transport category airplanes and associated appliances to the 
Director of the System Oversight Division.

Regulatory Findings

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

List of Subjects in 14 CFR Part 39

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

Adoption of the Amendment

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

PART 39--AIRWORTHINESS DIRECTIVES

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

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


Sec.  39.13   [Amended]

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

2018-26-05 The Boeing Company: Amendment 39-19535; Docket No. FAA-
2016-4219; Product Identifier 2015-NM-169-AD.

(a) Effective Date

    This AD is effective February 1, 2019.

(b) Affected ADs

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

(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 engine fuel 
shutoff spar valves discovered during fuel filter replacement. We 
are issuing this AD to address latent failure of the fuel shutoff 
spar 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/Ns) of the motor-
operated valve (MOV) actuators at the fuel shutoff spar valve 
positions 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 numbers can be conclusively determined from that review. If it 
can be definitively determined, by visual inspection or airplane 
maintenance records review, that P/N MA30A1017 (Boeing P/N S343T003-
76) is installed, or that airplane information management system 
(AIMS) 2 Block Point (BP) Version 17 or later software is installed, 
no further action is required by paragraph (g) of this AD.
    (1) For any MOV actuator with a P/N other than P/N MA30A1017 
(Boeing P/N S343T003-76) on an airplane having AIMS-1 installed: 
Within 24 months after the effective date of this AD, install MOV 
actuators having part number (P/N) MA30A1017 at the engine fuel 
shutoff spar positions, in accordance with the Accomplishment 
Instructions of Boeing Service Bulletin 777-28A0034, Revision 3, 
dated September 25, 2015.
    (2) For any MOV actuator with a P/N other than P/N MA30A1017 
(Boeing P/N S343T003-76) on an airplane having AIMS-2 BP Version 16 
software or earlier version, 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. For purposes of this AD, 
airplanes identified as Group 4 in Boeing Service Bulletin 777-
28A0034, Revision 3, dated September 25, 2015, also include 
airplanes with AIMS-2 BP Version 16 or earlier software installed.
    (i) Install MOV actuators having P/N MA30A1017 at the engine 
fuel shutoff spar valve positions, in accordance with the 
Accomplishment Instructions of Boeing Service Bulletin 777-28A0034, 
Revision 3, dated September 25, 2015. For airplanes identified as 
Group 7 in Boeing Service Bulletin 777-28A0034, Revision 3, dated 
September 25, 2015, with AIMS-2 BP Version 16 or earlier software, 
the instructions for installing P/N MA30A1017 (Boeing P/N S343T003-
76) are in Figures 35 and 37 of Boeing Service Bulletin 777-28A0034, 
Revision 3, dated September 25, 2015.
    (ii) Install AIMS-2 BP Version 17A software 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 BP Version 
17A software, and approved as part of the type design by the FAA 
after issuance of Boeing Service Bulletin 777-31-0218, dated 
September 8, 2016.

(h) Revision of Maintenance or Inspection Program

    Within 24 months after the effective date of this AD, 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.

[[Page 67043]]

[GRAPHIC] [TIFF OMITTED] TR28DE18.009

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

    Accomplishment of the actions required by paragraphs (g) and (h) 
of this AD on all affected airplanes in an operator's fleet 
terminates all requirements of AD 2015-19-01.

(j) 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 (k) of this AD. Information may be 
emailed to: [email protected].
    (2) Before using any approved AMOC, notify your appropriate 
principal inspector, or lacking a principal inspector, the manager 
of the local flight standards district office/certificate holding 
district office.
    (3) An AMOC that provides an acceptable level of safety may be 
used for any repair, modification, or alteration required by this AD 
if it is approved by the Boeing Commercial Airplanes Organization 
Designation Authorization (ODA) that has been authorized by the 
Manager, 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 
(j)(4)(i) and (j)(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.

(k) 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: [email protected].

(l) 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 Service Bulletin 777-28A0034, Revision 3, dated 
September 25, 2015.
    (ii) Boeing Service Bulletin 777-31-0218, dated September 8, 
2016.
    (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 December 18, 2018.
Michael Kaszycki,
Acting Director, System Oversight Division, Aircraft Certification 
Service.
[FR Doc. 2018-28075 Filed 12-27-18; 8:45 am]
BILLING CODE 4910-13-P