Rule2022-20773
Airworthiness Directives; The Boeing Company Airplanes
Primary source
Metadata and text below are from the Federal Register, a public-domain U.S. government work. Always verify the official published version before relying on it for any legal matter.
Published
September 26, 2022
Effective
October 31, 2022
Issuing agencies
Transportation DepartmentFederal Aviation Administration
Abstract
The FAA is adopting a new airworthiness directive (AD) for all The Boeing Company Model 777 airplanes. This AD was prompted by a report of a crack found in a front spar lower chord undergoing an underwing longeron replacement. This AD requires repetitive inspections for cracking of the left and right side ring chords, repair angles, front spar lower chords, and front spar webs (depending on configuration) common to the underwing longeron located at station (STA) 1035; modification of the front spar lower chord for some airplanes; repetitive post-modification inspections; and applicable on-condition actions. The FAA is issuing this AD to address the unsafe condition on these products.
Full Text
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<title>Federal Register, Volume 87 Issue 185 (Monday, September 26, 2022)</title>
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[Federal Register Volume 87, Number 185 (Monday, September 26, 2022)]
[Rules and Regulations]
[Pages 58259-58263]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2022-20773]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2022-0154; Project Identifier AD-2021-01153-T;
Amendment 39-22162; AD 2022-18-11]
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 all
The
[[Page 58260]]
Boeing Company Model 777 airplanes. This AD was prompted by a report of
a crack found in a front spar lower chord undergoing an underwing
longeron replacement. This AD requires repetitive inspections for
cracking of the left and right side ring chords, repair angles, front
spar lower chords, and front spar webs (depending on configuration)
common to the underwing longeron located at station (STA) 1035;
modification of the front spar lower chord for some airplanes;
repetitive post-modification inspections; and applicable on-condition
actions. The FAA is issuing this AD to address the unsafe condition on
these products.
DATES: This AD is effective October 31, 2022.
The Director of the Federal Register approved the incorporation by
reference of a certain publication listed in this AD as of October 31,
2022.
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 <a href="http://myboeingfleet.com">myboeingfleet.com</a>. 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 <a href="http://regulations.gov">regulations.gov</a> by searching
for and locating Docket No. FAA-2022-0154.
Examining the AD Docket
You may examine the AD docket at <a href="http://regulations.gov">regulations.gov</a> by searching for
and locating Docket No. FAA-2022-0154; 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.
FOR FURTHER INFORMATION CONTACT: Luis Cortez-Muniz, Aerospace Engineer,
Airframe Section, FAA, Seattle ACO Branch, 2200 South 216th St., Des
Moines, WA 98198; phone and fax: 206-231-3958; email: <a href="/cdn-cgi/l/email-protection#402c3529336e216e232f3234253a6d2d352e293a002621216e272f36"><span class="__cf_email__" data-cfemail="036f766a702d622d606c717766792e6e766d6a79436562622d646c75">[email protected]</span></a>.
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 all The Boeing Company
Model 777-200, -200LR, -300, -300ER, and 777F airplanes. The NPRM
published in the Federal Register on March 25, 2022 (87 FR 17032). The
NPRM was prompted by a report of a crack found in a front spar lower
chord undergoing an underwing longeron replacement. In the NPRM, the
FAA proposed to require repetitive inspections for cracking of the left
and right side ring chords, repair angles, front spar lower chords, and
front spar webs (depending on configuration) common to the underwing
longeron located at STA 1035; modification of the front spar lower
chord for some airplanes; repetitive post-modification inspections; and
applicable on-condition actions. The FAA is issuing this AD to address,
detect, and correct such cracking, which in combination with cracking
in the front spar web, could result in a fuel leak and fire hazard, or
in the case of more severe cracking, could also affect the structural
integrity of the airplane.
Discussion of Final Airworthiness Directive
Comments
The FAA received comments from two commenters, including Boeing and
the Air Line Pilots Association, International (ALPA), who supported
the NPRM without change.
The FAA received additional comments from four commenters,
including American Airlines, Delta Air Lines, FedEx Express (FedEx),
and United Airlines. The following presents the comments received on
the NPRM and the FAA's response to each comment.
Request To Clarify Whether Certain Modifications Terminate Certain
Actions
American Airlines (AAL) requested clarification on whether
accomplishing certain modifications terminates certain inspections
required by AD 2019-11-02, Amendment 39-19648 (84 FR 28722, June 20,
2019) (AD 2019-11-02). AAL noted that tables 27 and 28 in paragraph
1.E., ``Compliance,'' of Boeing Alert Requirements Bulletin 777-57A0122
RB, dated October 8, 2021, specify modifying the left-hand and right-
hand front spar lower chord (FSLC), after which, the repeat inspections
specified in tables 9 and 10 are terminated and new repeat inspections
are specified. AAL noted that a related situation arises in Boeing
Alert Service Bulletins 777-53A0081, Revision 2, dated March 29, 2019
(required by AD 2019-11-02), in which a repeat inspection is specified
for the underwing longerons (UWL) and then if a crack is found in that
longeron, it is replaced and new repetitive inspections are specified.
AAL added that Boeing confirmed that when the left-hand or right-hand
FSLC is modified, then inspections specified in Boeing Alert Service
Bulletins 777-53A0081, Revision 2, dated March 29, 2019; and Boeing
Service Bulletin 777-53-0084, Revision 2, dated December 9, 2020 (which
specifies modifying UWLs); would be satisfied for the modified side.
AAL requested clarification on whether the proposed AD would be revised
to state that the post-FSLC modification inspections in tables 27 and
28 of Boeing Alert Requirements Bulletin 777-57A0122 RB, dated October
8, 2021, would replace or supersede the post-modification inspections
in tables 6, 7, and 8, as applicable, of Boeing Alert Service Bulletin
777-53A0081, Revision 2, dated March 29, 2019, which is required by AD
2019-11-02.
The FAA agrees to clarify. Paragraph 4, ``Approval,'' of Boeing
Alert Requirements Bulletin 777-57A0122 RB, dated October 8, 2021,
states that the Manager of the FAA Seattle ACO Branch approves
accomplishing UWL inspections, repairs, and modifications in accordance
with Boeing Alert Requirements Bulletin 777-57A0122 RB, dated October
8, 2021, as an alternative method of compliance (AMOC) to the
inspection and corrective action requirements of paragraph (g) of AD
2019-11-02, for the modified longeron on that side only. AD 2019-11-02
would remain fully applicable to any unmodified side. The post-
modification actions required by paragraph (g) of this AD would remain
applicable to any modified side. The FAA has not revised this AD in
this regard.
Request To Correct the Number of Required Tables
Delta Air Lines (Delta) requested adding a new exceptions paragraph
to paragraph (h) of the proposed AD to correct the number of applicable
tables specified in Boeing Alert Requirements Bulletin 777-57A0122 RB,
dated October 8, 2021. Delta stated that in paragraph 1.E.,
``Compliance,'' of the RB, it states to accomplish the actions in
``Tables 1 through 50,'' however, there are 54 tables that describe the
necessary actions, not 50.
The FAA agrees with the request. The FAA has added paragraph (h)(3)
to this AD to specify ``Tables 1 through 54.''
[[Page 58261]]
Request To Address Formatting Issue With a Figure in Boeing Alert
Requirements Bulletin 777-57A0122 RB, Dated October 8, 2021
Delta requested that an exception be added to paragraph (h) of the
proposed AD to address a formatting issue with Figure 20 in Boeing
Alert Requirements Bulletin 777-57A0122 RB, dated October 8, 2021.
Delta stated that in Figure 20, Sheet 1 of 4, the text cuts off and
there is no image, but the text and image continue on the next sheet.
The FAA agrees that there appears to be a formatting issue with the
text and image in Figure 20, Sheet 1 of 4, in Boeing Alert Requirements
Bulletin 777-57A0122 RB, dated October 8, 2021. However, the figure
does include all of the text and image, and contains all the required
information. The FAA has not revised this AD in this regard.
Request To Allow a Certain Modification
FedEx requested a revision to paragraph (h) of the proposed AD to
allow a modification of the front spar using Section 57-10-10-2R in the
Boeing 767 structural repair manual (SRM) as an alternate method of
compliance for Boeing Alert Requirements Bulletin 777-57A0122 RB, dated
October 8, 2021. FedEx explained that its review of Boeing Alert
Requirements Bulletin 777-57A0122 RB, dated October 8, 2021, did not
show any difference in the post-modification inspection intervals for
airplanes modified per the SRM section. FedEx added that the SRM repair
has not been shown to be unsafe or unreliable, and operators and
vendors may already have parts in stock to do the repair.
The FAA disagrees with the commenter's request. The SRM referenced
by FedEx is for Model 767 airplanes and would not apply to the Model
777 airplanes referenced in this AD. The FAA infers that FedEx intended
to refer to the Boeing 777 SRM, which has a similar repair. The FAA
notes that Boeing Alert Requirements Bulletin 777-57A0122 RB, dated
October 8, 2021, has configurations based in part on whether or not the
FSLCs have been repaired using section 57-10-10 of the Boeing 777 SRM
or similar Boeing ODA-approved repair, and that while the post-
modification intervals may be the same, certain configurations have an
additional ultrasonic inspection. The FAA has determined that some of
the materials specified in the SRM's repair instructions do not provide
equivalent fatigue properties as the modification specified in Boeing
Alert Requirements Bulletin 777-57A0122 RB, dated October 8, 2021.
However, under the provisions of paragraph (i) of this AD, the FAA will
consider requests for alternative repairs or modification if sufficient
data are submitted to substantiate that the alternative would provide
an acceptable level of safety. The FAA has not changed this AD in this
regard.
Request To Revise AMOC Statement
FedEx requested a revision to the applicable longerons identified
in the AMOC statement in paragraph 4, ``Approval,'' in Boeing Alert
Requirements Bulletin 777-57A0122 RB, dated October 8, 2021. FedEx
stated that the wording, ``only applies to modified longerons,'' is
potentially misleading and should be revised to state ``only applies to
underwing longerons modified by SB 777-57A0122 RB.'' FedEx noted that
tables 39 and 40 of Boeing Alert Requirements Bulletin 777-57A0122 RB,
dated October 8, 2021, include actions to inspect the modifications to
the front spar, but omit any repetitive inspections of the UWL
modification. Thus, FedEx reasoned, an operator could incorrectly
interpret the AMOC statement as applying to airplanes previously
modified by Boeing Service Bulletin 777-53-0084, Revision 1, dated
March 4, 2020, and stop accomplishing the repetitive UWL inspections
required by AD 2019-11-02.
The FAA agrees to clarify the AMOC statement in Boeing Alert
Requirements Bulletin 777-57A0122 RB, dated October 8, 2021. The AMOC
statement does not extend to airplanes previously modified by Boeing
Service Bulletin 777-53-0087 or 777-53-0084. The AMOC statement's
applicability is limited to UWL inspections, repairs, and modifications
accomplished in accordance with Boeing Alert Requirements Bulletin 777-
57A0122 RB, dated October 8, 2021. The AMOC does not extend to
modifications done in accordance with any other service information.
Further, the AMOC applies only to the actions required by paragraph (g)
of AD 2019-11-02, which requires only Boeing Alert Service Bulletin
777-53A0081, Revision 2, dated March 29, 2019. The FAA has not changed
this AD in this regard.
Request To Reference Service Bulletin Instead of Requirements Bulletin
FedEx requested revising the proposed AD to reference Boeing Alert
Service Bulletin 777-57A0122, dated October 8, 2021, instead of Boeing
Alert Requirements Bulletin 777-57A0122 RB, dated October 8, 2021.
FedEx noted that Boeing Alert Service Bulletin 777-57A0122, dated
October 8, 2021, is written in a manner consistent with FAA Advisory
Circular 20-176, and that Boeing Alert Requirements Bulletin 777-
57A0122 RB, dated October 8, 2021, duplicates the figures and tables
from the service bulletin version to a point where it is cumbersome.
FedEx also stated that the duplication could lead to discrepancies
between the duplicated data. FedEx added that the RB document is only
available as part of Boeing Alert Service Bulletin 777-57A0122, dated
October 8, 2021, so the proposed AD would not be referencing an
independent document.
The FAA disagrees with the commenter's request. As noted in Note 1
to paragraph (g) of this AD, the service bulletin may be used for
guidance. Boeing Alert Requirements Bulletin 777-57A0122 RB, dated
October 8, 2021, and the required for compliance (``RC'') steps
included in Boeing Alert Service Bulletin 777-57A0122, dated October 8,
2021, include identical information. Therefore, complying with the
``RC'' steps in Boeing Alert Service Bulletin 777-57A0122, dated
October 8, 2021, would also satisfy the requirements of this AD. The
FAA notes that the requirements bulletin contains only the steps that
are required for compliance with this AD and is posted to Docket No.
FAA-2022-0154. The related service bulletin contains additional
information that may be helpful when complying with the AD, but is not
needed for compliance. Therefore, this AD specifies the requirements
bulletin, not the service bulletin. The FAA has not changed this AD in
this regard.
Request To Reduce Number of Groups and Configurations
United Airlines (United) requested a revision to Boeing Alert
Requirements Bulletin 777-57A0122 RB, dated October 8, 2021, to reduce
the large number of airplane groups and configurations identified in
the service information. United stated that the large number of groups
and configurations creates a planning challenge, and could increase the
potential for errors and non-compliance.
The FAA acknowledges the commenter's concerns about the relatively
large number of airplane groups and configurations identified. However,
the large number of airplane groups and configurations are necessary to
address the unsafe condition in a fleet with differences in existing
repairs and modifications in the inspected area. The FAA has not
changed this AD in this regard.
[[Page 58262]]
Request To Extend Compliance Time
United requested an extension to the compliance time(s) for
accomplishing the initial inspection. United explained that the initial
inspection involves entering the center tank, and that the current
compliance time would require accomplishing the inspection at
maintenance intervals that usually do not involve entering the center
tank. United explained that adding the task of entering the center tank
to those visits would extend the out-of-service time during those
visits and would result in increased costs to operators.
The FAA disagrees with the request to revise the compliance time.
In developing an appropriate compliance time, the FAA considered the
urgency associated with the subject unsafe condition, the availability
of required parts, and the practical aspect of accomplishing the
required modification within a period of time that corresponds to the
normal scheduled maintenance for most affected operators. The FAA has
determined that the compliance time provides an acceptable level of
safety. However, under the provisions of paragraph (i) of this AD, the
FAA will consider requests for an extension of the compliance time if
sufficient data are submitted to substantiate that the change would
provide an acceptable level of safety. The FAA has not changed this AD
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. 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 777-57A0122 RB,
dated October 8, 2021. This service information specifies procedures
for repetitive high frequency eddy current (HFEC), detailed, and
ultrasonic inspections (depending on configuration) for cracking of the
left and right side ring chords, repair angles, front spar lower
chords, and front spar webs (depending on configuration) common to the
underwing longeron located at STA 1035; modification of the front spar
lower chord for some airplanes; repetitive post-modification
inspections; and applicable on-condition actions. On-condition actions
include repair. 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 261 airplanes of U.S.
registry. The FAA estimates the following costs to comply with this AD:
Estimated Costs
----------------------------------------------------------------------------------------------------------------
Cost on U.S.
Action Labor cost Parts cost Cost per product operators
----------------------------------------------------------------------------------------------------------------
Inspection(s).................... 44 work-hours x $85 $0 $3,750 per $976,140 per
per hour = $3,750 inspection cycle. inspection cycle.
per inspection
cycle.
Modification *................... 137 work-hours x $47,964 $59,609............ Up to $15,557,949.
$85 per hour =
$11,645.
Post-modification inspection(s) * 46 work-hours x $85 $0 $3,910 per Up to $1,020,510
per hour = $3,910 inspection cycle. per inspection
per inspection cycle.
cycle.
----------------------------------------------------------------------------------------------------------------
* Number of affected airplanes that will be required to do this action is unknown
The FAA has received no definitive data on which to base the cost
estimates for the repairs specified in this AD.
The FAA has included all known costs in its cost estimate.
According to the 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.
[[Page 58263]]
Sec. 39.13 [Amended]
0
2. The FAA amends Sec. 39.13 by adding the following new airworthiness
directive:
2022-18-11 The Boeing Company: Amendment 39-22162; Docket No. FAA-
2022-0154; Project Identifier AD-2021-01153-T.
(a) Effective Date
This airworthiness directive (AD) is effective October 31, 2022.
(b) Affected ADs
None.
(c) Applicability
This AD applies to all The Boeing Company Model 777-200, -200LR,
-300, -300ER, and 777F airplanes, certificated in any category.
(d) Subject
Air Transport Association (ATA) of America Code 57, Wings.
(e) Unsafe Condition
This AD was prompted by a report of a crack found in a front
spar lower chord undergoing an underwing longeron replacement. The
FAA is issuing this AD to detect and correct such cracking, which in
combination with cracking in the front spar web, could result in a
fuel leak and fire hazard, or in the case of more severe cracking,
could also affect the structural integrity of the airplane.
(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 777-57A0122 RB, dated October 8, 2021,
do all applicable actions identified in, and in accordance with, the
Accomplishment Instructions of Boeing Alert Requirements Bulletin
777-57A0122 RB, dated October 8, 2021. Actions identified as
terminating action in Boeing Alert Requirements Bulletin 777-57A0122
RB, dated October 8, 2021, terminate the applicable required actions
of this AD, provided the terminating action is done in accordance
with the Accomplishment Instructions of Boeing Alert Requirements
Bulletin 777-57A0122 RB, dated October 8, 2021.
Note 1 to paragraph (g): Guidance for accomplishing the actions
required by this AD can be found in Boeing Alert Service Bulletin
777-5A0122, dated October 8, 2021, which is referred to in Boeing
Alert Requirements Bulletin 777-57A0122 RB, dated October 8, 2021.
(h) Exceptions to Service Information Specifications
(1) Where the Compliance Time columns of the tables in the
``Compliance'' paragraph of Boeing Alert Requirements Bulletin 777-
57A0122 RB, dated October 8, 2021, use the phrase ``the original
issue date of Requirements Bulletin 777-57A0122 RB,'' this AD
requires using ``the effective date of this AD.''
(2) Where Boeing Alert Requirements Bulletin 777-57A0122 RB,
dated October 8, 2021, specifies contacting Boeing for repair
instructions: This AD requires doing the repair using a method
approved in accordance with the procedures specified in paragraph
(i) of this AD.
(3) Where the ``Compliance'' paragraph of Boeing Alert
Requirements Bulletin 777-57A0122 RB, dated October 8, 2021, uses
the phrase ``Tables 1 through 50,'' this AD requires using ``Tables
1 through 54.''
(i) 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 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 (j)(1) of this AD. Information may be
emailed to: <a href="/cdn-cgi/l/email-protection#fac3d7bbb4b7d7a99f9b8e8e969fd7bbb9b5d7bbb7b5b9d7a89f8b8f9f898e89ba9c9b9bd49d958c"><span class="__cf_email__" data-cfemail="caf3e78b8487e799afabbebea6afe78b8985e78b878589e798afbbbfafb9beb98aacababe4ada5bc">[email protected]</span></a>.
(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.
(j) Related Information
(1) For more information about this AD, contact Luis Cortez-
Muniz, Aerospace Engineer, Airframe Section, FAA, Seattle ACO
Branch, 2200 South 216th St., Des Moines, WA 98198; phone and fax:
206-231-3958; email: <a href="/cdn-cgi/l/email-protection#3d5148544e135c135e524f4958471050485354477d5b5c5c135a524b"><span class="__cf_email__" data-cfemail="472b322e3469266924283533223d6a2a32292e3d0721262669202831">[email protected]</span></a>.
(2) Service information identified in this AD that is not
incorporated by reference is available at the addresses specified in
paragraphs (k)(3) and (4) of this AD.
(k) 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 777-57A0122 RB, dated
October 8, 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 <a href="http://myboeingfleet.com">myboeingfleet.com</a>.
(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, <a href="/cdn-cgi/l/email-protection#a6c0d488cfc8d5d6c3c5d2cfc9c8e6c8c7d4c788c1c9d0"><span class="__cf_email__" data-cfemail="c7a1b5e9aea9b4b7a2a4b3aea8a987a9a6b5a6e9a0a8b1">[email protected]</span></a>, or go to: <a href="http://archives.gov/federal-register/cfr/ibr-locations.html">archives.gov/federal-register/cfr/ibr-locations.html</a>.
Issued on August 23, 2022.
Christina Underwood,
Acting Director, Compliance & Airworthiness Division, Aircraft
Certification Service.
[FR Doc. 2022-20773 Filed 9-23-22; 8:45 am]
BILLING CODE 4910-13-P
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