[Federal Register Volume 87, Number 229 (Wednesday, November 30, 2022)]
[Rules and Regulations]
[Pages 73452-73456]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2022-26079]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2022-0103; Project Identifier AD-2021-00977-T; 
Amendment 39-22238; AD 2022-23-11]
RIN 2120-AA64


Airworthiness Directives; The Boeing Company Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

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SUMMARY: The FAA is adopting a new airworthiness directive (AD) for 
certain The Boeing Company Model 777 airplanes. This AD was prompted by 
reports of discrepancies between the center wing tank (CWT) fuel 
quantity, as indicated by the fuel quantity indicating system (FQIS), 
and the refueling truck uploaded fuel amount, followed by certain 
engine-indicating and crew-alerting system (EICAS) messages. This AD 
requires installing new software in the fuel quantity processor unit 
(FQPU), or replacing the FQPU with one that includes new software, 
depending on airplane configuration; doing a software version check; 
and doing a FQPU operational check, depending on airplane 
configuration. This AD also prohibits the installation of certain FQPUs 
on certain airplanes. The FAA is issuing this AD to address the unsafe 
condition on these products.

DATES: This AD is effective January 4, 2023.
    The Director of the Federal Register approved the incorporation by 
reference of a certain publication listed in this AD as of January 4, 
2023.

ADDRESSES: 
    AD Docket: You may examine the AD docket at regulations.gov under 
Docket No. FAA-2022-0103; 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, any comments received, and other 
information. The address for Docket Operations 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.
    Material Incorporated by Reference:
     For service information identified in this final rule, 
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].
     You may view this service information at the FAA, 
Airworthiness Products Section, Operational Safety 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 at 
regulations.gov under Docket No. FAA-2022-0103.

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: 

Background

    The FAA 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 21, 2022 (87 FR 15902). The NPRM was prompted by reports of 
discrepancies between the CWT fuel quantity, as indicated by the FQIS, 
and the refueling truck uploaded fuel amount, followed by certain EICAS 
messages. In the NPRM, the FAA proposed to require installing new 
software in the FQPU, or replacing the FQPU with one that includes new 
software, depending on airplane configuration; doing a software version 
check; and doing a FQPU operational check, depending on airplane 
configuration. In the NPRM, the FAA also proposed to prohibit the 
installation of certain FQPUs on certain airplanes. The FAA is issuing 
this AD to address discrepancies in the CWT FQIS, which can result in 
an airplane being dispatched with insufficient fuel in the CWT and with 
the flight crew unaware of the insufficient fuel prior to departure. 
This condition, coupled with continued flight to the destination 
airport after receiving EICAS messages

[[Page 73453]]

while in route to the destination, could result in fuel exhaustion and 
subsequent power loss to all engines, thereby resulting in the 
inability to land at the destination airport or at a diversion airport, 
possibly leading to flight into terrain.

Discussion of Final Airworthiness Directive

Comments

    The FAA received comments from Air Line Pilots Association, 
International (ALPA), FedEx Express, and United Airlines (UAL), who 
supported the NPRM without change.
    The FAA received additional comments from seven commenters, 
including Cathay Pacific Airways (Cathay), Air France (AFA), Korean Air 
(KAL), Boeing, British Airways (BAB), Ontic, and American Airlines 
(AAL). The following presents the comments received on the NPRM and the 
FAA's response to each comment.

Request To Remove or Modify Paragraph (j) Parts Installation 
Prohibition

    Boeing requested that the FAA remove the parts installation 
prohibition specified in paragraph (j) of the proposed AD. Boeing 
stated that the safety rationale for immediate prohibition of 
installation of FQIS-1 FQPU P/N 0320KPU01 is unclear, and that the 
actions and compliance times outlined in paragraph (g) of the proposed 
AD are sufficient without the additional prohibitions identified in 
paragraph (j) of the proposed AD. Boeing stated that operators have 
indicated a need to continue installing FQIS-1 FQPU part number (P/N) 
0320KPU01 within the compliance period prior to availability of 
replacement FQIS-2 FQPUs P/Ns 0335KPU01, 0335KPU02, and 0335KPU03; and 
that prohibiting the installation of a FQIS-1 FQPU would present an 
unnecessary hardship due to insufficient availability of FQIS-2 FQPU. 
Boeing added that the statement ``This proposed AD would also prohibit 
the installation of certain FQPUs on certain airplanes'' in the Summary 
of the NPRM should also be removed.
    AFA requested that the FAA modify the parts prohibition specified 
in paragraph (j) of the proposed AD in order to give more flexibility 
and allow installation of FQIS-1 FQPU P/N 0320KPU01 on airplanes that 
have not yet been retrofitted in accordance with Boeing Alert 
Requirements Bulletin 777-28A0090 RB, dated March 30, 2021. AFA 
explained that unplanned removal (e.g., due to failure or 
troubleshooting) of FQIS-1 FQPU would necessitate replacement with 
FQIS-2 FQPU, but demand for that cannot be met by the manufacturer. AFA 
stated that if the installation prohibition per paragraph (j) of the 
proposed AD is adopted as is, airplanes would be grounded because of 
the lack of required serviceable spares. AFA asserted that the safety 
risk is already addressed by AD 2020-11-11, Amendment 39-19915 (85 FR 
34090, June 3, 2020) (AD 2020-11-11).
    KAL requested that the FAA consider removing the parts installation 
prohibition specified in paragraph (j) of this proposed AD, or clarify 
and mitigate the parts installation prohibition conditions. KAL said 
the vendor was not able to provide the FQIS-2 FQPU until December 2023.
    BAB proposed removing paragraph (j) of the proposed AD (the ``Parts 
Installation Prohibition,'' requirement) because the forecast supply of 
upgraded FQPUs (FQIS-2 FQPUs P/Ns 0335KPU01, 0335KPU02, and 0335KPU03) 
does not support the requirement, and the resulting cost of aircraft 
grounding is disproportionate to the fleet safety risk mitigation 
provided to the fleet by the proposed AD. BAB said the action is not 
justified; is not required for fleet safety; and was not required, 
recommended, or communicated to operators in the Boeing Alert 
Requirements Bulletin 777-28A0090 RB, dated March 30, 2021, which the 
FAA has previously approved.
    BAB explained that due to material shortages, the manufacturer is 
forecasting that deliveries of the new FQPUs will not commence until 
the second quarter of 2023. Should the AD be published with the 
prohibition specified in paragraph (j) of the proposed AD, BAB asserted 
that there will be a significant risk of grounding aircraft due to lack 
of availability of FQIS-2 FQPU P/N 0335KPU03. BAB also said the 
mandated integrated refuel panel (IRP) door cycling procedure required 
by AD 2020-11-11 is performed for all fuel uplifts regardless of 
whether the CWT is being utilized, and will continue until Boeing Alert 
Requirements Bulletin 777-28A0090 RB, dated March 30, 2021, has been 
accomplished on the entire fleet. BAB concluded that the risk of 
departing with less than the minimum fuel for the mission has been 
effectively mitigated since 2020 with this mandated IRP door cycling 
procedure.
    AAL requested that the FAA allow replacement of FQIS-1 FQPU P/N 
0320KPU01 with the same FQPU while the fleet is being upgraded to the 
FQIS-2 FQPU (e.g., P/N 0335KPU03), as specified in Boeing Alert 
Requirements Bulletin 777-28A0090 RB, dated March 30, 2021. AAL noted 
that the parts installation prohibition specified in paragraph (j) of 
the proposed AD specifies that, for certain airplanes, ``as of the 
effective date of the AD,'' FQIS-1 FQPU P/N 0320KPU01 may not be 
installed. AAL said that the manufacturer is unable to meet delivery 
schedules. AAL noted it will likely not have the spare FQIS-2 FQPU P/N 
0335KPU03 necessary for out-of-service events caused by failure of 
FQIS-1 FQPU P/N 0320KPU01, potentially causing extended down time. AAL 
explained that the fuel cycling procedure required by AD 2020-11-11 
will continue while the upgrade is in progress, eliminating fuel drop 
events potentially caused by the FQIS-1 FQPU.
    The FAA partially agrees with the request to modify paragraph (j) 
of this AD because, as the commenters explained, there is a limited 
availability of FQIS-2 FQPU, and AD 2020-11-11 is still in effect for 
airplanes with FQIS-1 FQPU installed. The FAA agrees to provide relief 
to the parts installation prohibition specified in paragraph (j) of 
this AD by allowing airplanes identified in Group 1 of Boeing Alert 
Requirements Bulletin 777-28A0090 RB, dated March 30, 2021, that still 
have FQIS-1 FQPU installed to continue installing FQIS-1 FQPU P/N 
0320KPU01 within the 30-month compliance time. For those airplanes, 
FQIS-1 FQPU must be replaced by FQIS-2 FQPU by the end of the 
compliance time as required by paragraph (g) of this AD, which mandates 
Boeing Alert Requirements Bulletin 777-28A0090 RB, dated March 30, 
2021. Note that paragraph (h) of this AD (``Exceptions to Service 
Information Specifications'') defines the compliance time as 30 months 
after ``the effective date of this AD'' rather than after ``the 
original issue date of Requirements Bulletin 777-28A0090 RB.''
    The FAA disagrees with removing paragraph (j) of this AD completely 
because the installation of FQIS-1 FQPU onto Group 1 airplanes that 
already have the FQIS-2 FQPU installed must be prevented, even when 
there is an unplanned removal of the FQPU.
    Paragraph (j) of this AD has been revised to read ``For Group 1 
airplanes identified in Boeing Alert Requirements Bulletin 777-28A0090 
RB, dated March 30, 2021, that have a FQIS-2 fuel quantity processor 
unit (FQPU) part number (P/N) 0335KPU01, 0335KPU02, or 0335KPU03 
installed: As of the effective date of this AD, no person may install a 
FQIS-1 FQPU P/N 0320KPU01

[[Page 73454]]

(Boeing P/N S345W001-010), on any airplane.''

Request To Extend Compliance Time

    AFA requested a reasonable timescale for replacement of FQIS-1 FQPU 
P/N 0320KPU01 due to the shortage of FQIS-2 FQPU replacement units.
    KAL also requested that the FAA provide a compliance time long 
enough (e.g., a compliance time extension) to support the shortage of 
FQPU (the FAA infers the commenter is referring to FQIS-2 FQPU) because 
of lack of availability of replacement units. KAL said the vendor was 
not able to provide the FQIS-2 FQPU until December 2023, and they are 
unable to meet the compliance deadline of ``September 2023.'' The FAA 
infers that KAL is measuring the 30-month compliance time from March 
30, 2021, the publication date of Boeing Alert Requirements Bulletin 
777-28A0090 RB, dated March 30, 2021.
    Ontic stated that the limited availability of FQIS-2 FQPU could not 
support the fleet of aircraft still in operation within the 30 months 
compliance time specified in Boeing Alert Requirements Bulletin 777-
28A0090 RB, dated March 30, 2021. Ontic further stated that it 
understands the 30-month compliance time typically commences on the 
release of the AD, and not the service information. The FAA infers a 
request by Ontic to extend the compliance time if it commences on the 
publication date of Boeing Alert Requirements Bulletin 777-28A0090 RB, 
dated March 30, 2021.
    The FAA disagrees with the request to change the compliance time of 
30 months to accomplish Boeing Alert Requirements Bulletin 777-28A0090 
RB, dated March 30, 2021. The FAA has confirmed with the manufacturers 
that a sufficient supply of FQIS-2 FQPU would be available to meet the 
compliance time if replacement of a FQIS-1 FQPU with a serviceable 
FQIS-1 FQPU is done within that time. As stated previously, the 30-
month compliance time commences on the effective date of this AD, as 
specified in paragraph (h) of this AD. If operators encounter 
difficulty with accomplishing the actions required by this AD within 
the compliance time, they may request an alternative method of 
compliance (AMOC) in accordance with paragraph (k) of this AD. This AD 
has not been changed regarding this request.

AMOC Guidance From Boeing

    Boeing offered to provide guidance for operators who request 
continued use of AD 2020-11-11 as an AMOC to this AD. Boeing said that 
individual airlines operate Model 777 airplanes differently, therefore 
a global AMOC is not practical for this AD. Boeing advised that 
considerations for requesting an AMOC would include frequency and 
quantity of center tank fuel loaded for mission profiles, planned end-
of-life retirement of the airplane, and other factors impacting 
individual airline operations.
    The FAA supports the manufacturer's offer of guidance. Operators 
may request AMOCs under the provisions of paragraph (k) of this AD. 
This AD has not been changed regarding this request.

Request To Revise the Summary Section

    Boeing requested that the Summary section of the NPRM be revised 
for clarity. Boeing stated that the Summary description is inconsistent 
with the service bulletin regarding the operational check and the 
software version check. Boeing explained that the software version 
check should be accomplished when the software is downloaded to the 
FQPU onboard, and when a new FQPU is installed on the airplane. Boeing 
added that the operational check is only required when installing a new 
or updated FQPU on the airplane.
    The FAA agrees to the request to revise the Summary section of this 
AD for the reason provided by the commenter. The third sentence of the 
Summary has been changed by adding ``, depending on airplane 
configuration'' to the end of the sentence.

Recommendation To Modify Background Paragraphs

    Boeing recommended that the technical description of the design 
flaw in the Background paragraphs be refined for clarity and reduce the 
possibility of reader misperception. Boeing provided revised language 
for the paragraph discussing the design flaw. Boeing also asked that 
the paragraph discussing the events where there was incorrect fuel 
quantity information be removed; that paragraph includes a description 
of the situation where the FQIS could indicate less than the actual 
fuel quantity in the CWT.
    The FAA disagrees with this recommendation because the referenced 
information provided in the Background paragraphs of the NPRM is not 
repeated in the final rule. Furthermore, the information given 
adequately describes the design flaw in the FQIS, including the one in-
service event where more fuel was added to the center tank than 
required for the mission. This AD has not been changed with regard to 
this request.

Request for Further Information About Software Loading and the AMOC 
Process

    Cathay asked for the lead time for an AMOC to retain the door 
cycling procedure of AD 2020-11-11. Cathay also asked whether a certain 
Boeing information notice will be part of the AD requirement because of 
difficulties encountered with software loading.
    The FAA advises that the standard response time for an AMOC 
application is 30 days. AMOC requests may be submitted as indicated in 
paragraph (k) of this AD. This AD requires only that FQPU software be 
upgraded or the FQPU replaced. There is no requirement regarding how 
the software upgrade is to be accomplished. Operators may refer to the 
Boeing information notice without requesting an AMOC. This AD has not 
been revised in this regard.

Conclusion

    The FAA reviewed the relevant data, considered any comments 
received, and determined that air safety requires adopting this AD as 
proposed. Accordingly, the FAA is issuing this AD to address the unsafe 
condition on these products. Except for minor editorial changes, and 
any other changes described previously, this AD is adopted as proposed 
in the NPRM. None of the changes will increase the economic burden on 
any operator.

Related Service Information Under 1 CFR Part 51

    The FAA reviewed Boeing Alert Requirements Bulletin 777-28A0090 RB, 
dated March 30, 2021. This service information specifies procedures for 
a check of maintenance or delivery records or an inspection to 
determine the part number of the FQPU for Group 1 airplanes. For Group 
1 airplanes with a FQIS-1 FQPU, this service information specifies 
procedures for removing the existing FQPU; installing certain FQIS-2 
FQPU with upgraded software; and doing a software version check and 
FQPU operational check. For Group 1 airplanes with a FQIS-2 FQPU and 
Group 2 airplanes, this service information specifies procedures for 
upgrading the FQPU software, and doing a software version check.
    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 ADDRESSES.

Costs of Compliance

    The FAA estimates that this AD affects 257 airplanes of U.S. 
registry. The FAA estimates the following costs to comply with this AD:

[[Page 73455]]



                                                 Estimated Costs
----------------------------------------------------------------------------------------------------------------
                                                                                     Cost per      Cost on U.S.
                Action                         Labor cost           Parts cost        product        operators
----------------------------------------------------------------------------------------------------------------
Records review or inspection of FQPU    1 work-hour x $85 per                 $0             $85         $12,155
 part number for Group 1 airplanes       hour = $85.
 (143 airplanes).
Group 1 with FQIS-1 FQPU (125           1 work-hour x $85 per             48,300          48,385       6,048,125
 airplanes): Replace FQPU with FQIS-2    hour = $85.
 FQPU, and do software and FQPU checks.
Group 1 with FQIS-2 FQPU and Group 2    1 work-hour x $85 per                  0              85          11,220
 (132 airplanes): Upgrade software and   hour = $85.
 do software check.
----------------------------------------------------------------------------------------------------------------

    The FAA has included all known costs in its cost estimate. 
According to the software manufacturer, however, some or all of the 
costs of this AD may be covered under warranty, thereby reducing the 
cost impact on affected operators.

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.
    The FAA is 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.

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) Will not affect intrastate aviation in Alaska, and
    (3) 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 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:

2022-23-11 The Boeing Company: Amendment 39-22238; Docket No. FAA-
2022-0103; Project Identifier AD-2021-00977-T.

(a) Effective Date

    This airworthiness directive (AD) is effective January 4, 2023

(b) Affected ADs

    This AD affects AD 2020-11-11, Amendment 39-19915 (85 FR 34090, 
June 3, 2020) (AD 2020-11-11).

(c) Applicability

    This AD applies to The Boeing Company Model 777-200, -200LR, -
300, -300ER, and 777F series airplanes, certificated in any 
category, Group 1 and Group 2 as identified in Boeing Alert 
Requirements Bulletin 777-28A0090 RB, dated March 30, 2021.

(d) Subject

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

(e) Unsafe Condition

    This AD was prompted by reports of discrepancies between the 
center wing tank (CWT) fuel quantity, as indicated by the fuel 
quantity indicating system (FQIS), and the actual amount uploaded 
from the refueling truck. The FAA is issuing this AD to address 
discrepancies in the CWT FQIS, which can result in an airplane being 
dispatched with insufficient fuel in the CWT and with the flight 
crew unaware of the insufficient fuel prior to departure. This 
condition, coupled with continued flight to the destination airport 
after receiving engine-indicating and crew-alerting system (EICAS) 
messages while in route to the destination, could result in fuel 
exhaustion and subsequent power loss to all engines, thereby 
resulting in the inability to land at the destination airport or at 
a diversion airport, possibly leading to flight into terrain.

(f) Compliance

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

(g) Required Actions

    Except as specified by paragraph (h) of this AD: At the 
applicable times specified in the ``Compliance'' paragraph of Boeing 
Alert Requirements Bulletin 777-28A0090 RB, dated March 30, 2021, do 
all applicable actions identified in, and in accordance with, the 
Accomplishment Instructions of Boeing Alert Requirements Bulletin 
777-28A0090 RB, dated March 30, 2021.

    Note 1 to paragraph (g):  Guidance for accomplishing the actions 
required by this AD can be found in Boeing Alert Service Bulletin 
777-28A0090, dated March 30, 2021, which is referred to in Boeing 
Alert Requirements Bulletin 777-28A0090 RB, dated March 30, 2021.

(h) Exceptions to Service Information Specifications

    Where the Compliance Time column of the tables in the 
``Compliance'' paragraph of Boeing Alert Requirements Bulletin 777-
28A0090 RB, dated March 30, 2021, uses the phrase ``the original 
issue date of Requirements Bulletin 777-28A0090 RB,'' this AD 
requires using ``the effective date of this AD.''

(i) Terminating Action for AD 2020-11-11

    Accomplishing the actions required by this AD on all affected 
airplanes in an operator's fleet terminates the requirements of AD 
2020-11-11 for that fleet.

(j) Parts Installation Prohibition

    For Group 1 airplanes identified in Boeing Alert Requirements 
Bulletin 777-28A0090 RB, dated March 30, 2021, that have a FQIS-2 
fuel quantity processor unit (FQPU) part number (P/N) 0335KPU01, 
0335KPU02, or 0335KPU03 installed: As of the effective date of this 
AD, no person may install a FQIS-1 FQPU P/N 0320KPU01 (Boeing P/N 
S345W001-010) on any airplane.

(k) Alternative Methods of Compliance (AMOCs)

    (1) The Manager, Seattle ACO Branch, FAA, has the authority to 
approve AMOCs

[[Page 73456]]

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 responsible Flight Standards 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: [email protected].
    (2) Before using any approved AMOC, notify your appropriate 
principal inspector, or lacking a principal inspector, the manager 
of the responsible Flight Standards 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 Company 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.

(l) Related Information

    (1) 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].
    (2) Service information identified in this AD that is not 
incorporated by reference is available at the addresses specified in 
paragraphs (m)(3) and (4) of this AD.

(m) 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 Alert Requirements Bulletin 777-28A0090 RB, dated 
March 30, 2021.
    (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 myboeingfleet.com.
    (4) You may view this service information at the FAA, 
Airworthiness Products Section, Operational Safety 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, [email protected], or go to: www.archives.gov/federal-register/cfr/ibr-locations.html.

    Issued on November 1, 2022.
Christina Underwood,
Acting Director, Compliance & Airworthiness Division, Aircraft 
Certification Service.
[FR Doc. 2022-26079 Filed 11-29-22; 8:45 am]
BILLING CODE 4910-13-P


