Airworthiness Directives; The Boeing Company Airplanes
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Issuing agencies
Abstract
The FAA is revising a notice of proposed rulemaking (NPRM) that applied to all The Boeing Company Model 757 airplanes. This action revises the NPRM by adding inspections for airplanes modified to a cargo configuration. The FAA is proposing this airworthiness directive (AD) to address the unsafe condition on these products. Since these actions would impose an additional burden over those in the NPRM, the FAA is requesting comments on this SNPRM.
Full Text
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<title>Federal Register, Volume 88 Issue 171 (Wednesday, September 6, 2023)</title>
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[Federal Register Volume 88, Number 171 (Wednesday, September 6, 2023)]
[Proposed Rules]
[Pages 60904-60907]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2023-18839]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2023-0017; Project Identifier AD-2022-01418-T]
RIN 2120-AA64
Airworthiness Directives; The Boeing Company Airplanes
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Supplemental notice of proposed rulemaking (SNPRM).
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SUMMARY: The FAA is revising a notice of proposed rulemaking (NPRM)
that applied to all The Boeing Company Model 757 airplanes. This action
revises the NPRM by adding inspections for airplanes modified to a
cargo configuration. The FAA is proposing this airworthiness directive
(AD) to address the unsafe condition on these products. Since these
actions would impose an additional burden over those in the NPRM, the
FAA is requesting comments on this SNPRM.
DATES: The FAA must receive comments on this SNPRM by October 23, 2023.
ADDRESSES: You may send comments, using the procedures found in 14 CFR
11.43 and 11.45, by any of the following methods:
<bullet> Federal eRulemaking Portal: Go to <a href="http://regulations.gov">regulations.gov</a>. Follow
the instructions for submitting comments.
<bullet> Fax: 202-493-2251.
<bullet> Mail: U.S. Department of Transportation, Docket
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New
Jersey Avenue SE, Washington, DC 20590.
<bullet> Hand Delivery: Deliver to Mail address above between 9
a.m. and 5 p.m., Monday through Friday, except Federal holidays.
AD Docket: You may examine the AD docket at <a href="http://regulations.gov">regulations.gov</a> under
Docket No. FAA-2023-0017; or in person at Docket Operations between 9
a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD
docket contains the NPRM, this SNPRM, any comments received, and other
information. The street address for Docket Operations is listed above.
Material Incorporated by Reference:
<bullet> For service information identified in this SNPRM, contact
Boeing Commercial Airplanes, Attention: Contractual & Data Services
(C&DS), 2600 Westminster Blvd., MC 110-SK57, Seal Beach, CA 90740-5600;
telephone 562-797-1717; website <a href="http://myboeingfleet.com">myboeingfleet.com</a>.
<bullet> 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-2023-0017.
FOR FURTHER INFORMATION CONTACT: Wayne Ha, Aviation Safety Engineer,
FAA, 3960 Paramount Boulevard, Lakewood, CA 90712; phone: 562-627-5238;
email: <a href="/cdn-cgi/l/email-protection#1661776f7873387e775670777738717960"><span class="__cf_email__" data-cfemail="b3c4d2caddd69ddbd2f3d5d2d29dd4dcc5">[email protected]</span></a>.
SUPPLEMENTARY INFORMATION:
Comments Invited
The FAA invites you to send any written relevant data, views, or
arguments about this proposal. Send your comments to an address listed
under ADDRESSES. Include ``Docket No. FAA-2023-0017; Project Identifier
AD-2022-01418-T'' at the beginning of your comments. The most helpful
comments reference a specific portion of the proposal, explain the
reason for any recommended change, and include supporting data. The FAA
will consider all comments received by the closing date and may again
revise this proposal because of those comments.
Except for Confidential Business Information (CBI) as described in
the following paragraph, and other information as described in 14 CFR
11.35, the FAA will post all comments received, without change, to
<a href="http://regulations.gov">regulations.gov</a>, including any personal information you provide. The
agency will also post a report summarizing each substantive verbal
contact received about this proposed AD.
Confidential Business Information
CBI is commercial or financial information that is both customarily
and actually treated as private by its owner. Under the Freedom of
Information Act (FOIA) (5 U.S.C. 552), CBI is exempt from public
disclosure. If your comments responsive to this SNPRM contain
commercial or financial information that is customarily treated as
private, that you actually treat as private, and that is relevant or
responsive to this SNPRM, it is important that you clearly designate
the submitted comments as CBI. Please mark each page of your submission
containing CBI as ``PROPIN.'' The FAA will treat such marked
submissions as confidential under the FOIA, and they will not be placed
in the public docket of this SNPRM. Submissions containing CBI should
be sent to Wayne Ha, Aviation Safety Engineer, FAA, 3960 Paramount
Boulevard, Lakewood, CA 90712; phone: 562-627-5238; email:
<a href="/cdn-cgi/l/email-protection#1463756d7a713a7c75547275753a737b62"><span class="__cf_email__" data-cfemail="a8dfc9d1c6cd86c0c9e8cec9c986cfc7de">[email protected]</span></a>. Any commentary that the FAA receives that is not
specifically designated as CBI will be placed in the public docket for
this rulemaking.
Background
The FAA issued an NPRM to amend 14 CFR part 39 by adding an AD that
would apply to all The Boeing Company Model 757 airplanes. The NPRM
published in the Federal Register on January 26, 2023 (88 FR 4920). The
NPRM was prompted by the potential for cracks to start in hidden areas
underneath the scuff plates in the fuselage skin and bear strap of
certain doors. In the NPRM, the FAA stated that certain maintenance
inspections do not include a step to remove the scuff plates, which
contributes to the inability to find cracks before they become
critical. Cracks underneath the scuff plates in the fuselage skin and
bear strap, if not addressed, could adversely affect the structural
integrity of the airplane.
[[Page 60905]]
In the NPRM, the FAA proposed to require a general visual
inspection or a maintenance records check for repairs in the areas
around the fuselage skin door cutout lower corners of certain doors.
The FAA also proposed applicable on-condition actions including
repetitive low frequency and high frequency eddy current inspections
for cracks in the skin or bear strap in the unrepaired areas, and crack
repair.
Actions Since the NPRM Was Issued
Based on the comments the FAA received on the NPRM, the FAA is
proposing additional inspections for Model 757-200 series airplanes
that have been modified from a passenger configuration to a cargo
configuration under supplemental type certificate (STC) ST04242AT,
ST03562AT, or ST03952AT. As proposed in the NPRM, for Model 757-200
series airplanes with STC ST04242AT, ST03562AT, or ST03952AT, only the
No. 1, No. 2, and No. 4 passenger entry doors, and the No. 1, No. 2,
and No. 3 cargo doors, would have to be inspected. With this SNPRM, the
FAA is proposing that for those airplanes, the crew entry door and main
deck cargo door, as applicable, would also have to be inspected. This
change is more fully discussed under the Comments section.
Comments
The FAA received comments from the Air Line Pilots Association,
International, Boeing, and United Airlines, who supported the NPRM
without change.
The FAA also received comments from Aviation Partners Boeing, VT
Mobile Aerospace Engineering (VT MAE), and Federal Express (FedEx). The
following presents the comments received on the NPRM and the FAA's
response to each comment.
Effect of Winglets on Accomplishment of the Proposed Actions
Aviation Partners Boeing stated that the installation of blended or
scimitar blended winglets per STC ST01518SE does not affect compliance
with the actions in the proposed AD.
The FAA agrees with the commenter. The FAA has redesignated
paragraph (c) of the proposed AD (of the NPRM) as paragraph (c)(1) of
this proposed AD (of the SNPRM) and added paragraph (c)(2) to this
proposed AD to state that installation of STC ST01518SE does not affect
the ability to accomplish the actions required by this AD. Therefore,
for airplanes on which STC ST01518SE is installed, a ``change in
product'' alternative method of compliance (AMOC) approval request is
not necessary to comply with the requirements of 14 CFR 39.17.
Request To Change Required Inspections and Compliance Time for
Airplanes Modified per VT MAE STC ST04242AT
VT MAE requested the FAA change the proposed inspections for
airplanes modified under STC ST04242AT from a passenger configuration
to a 15-pallet cargo configuration. VT MAE stated that under STC
ST04242AT, the No. 1 left hand side (LHS), No. 1 right hand side (RHS),
No. 4 LHS, and No. 4 RHS passenger entry doors have been plugged (re-
skinned). Thus, the commenter requested the FAA not require these
airplanes to be subject to the inspection of the No. 1 LHS, No. 1 RHS,
No. 4 LHS and No. 4 RHS passenger entry doors specified in Boeing Alert
Requirements Bulletin 757-53A0119 RB, dated October 12, 2022. In
addition, the commenter stated that under STC ST04242AT, the crew entry
door and the main deck cargo door surround cutout structure is similar
to that of Boeing Model 757-200 PF airplanes identified as Group 4 in
Boeing Alert Requirements Bulletin 757-53A0119 RB, dated October 12,
2022. As a result, VT MAE requested that these airplanes be required to
do the inspection of the crew entry door and main deck cargo door
(Table 4 and Table 5 of Boeing Alert Requirements Bulletin 757-53A0119
RB, dated October 12, 2022), that is specified for Group 4 airplanes.
The FAA agrees that Model 757-200 series airplanes modified under
VT MAE STC ST04242AT should be subject to the same inspections as those
required for Model 757-200 PF series airplanes (Group 4 in the service
information), due to the similar design. The FAA has added paragraph
(g)(2) of this proposed AD to require these additional inspections. The
FAA disagrees with the request to omit the inspection of the passenger
doors because the commenter did not submit sufficient data to
substantiate an acceptable level of safety.
VT MAE also requested the FAA change the proposed compliance time
to start after the airplane is converted from passenger to cargo
configuration for the inspection at the door cutout lower corners of
the crew entry door and the door cutout lower corners of main deck
cargo door. The commenter stated that the cutout structures are newly
installed during the freighter conversion.
The FAA disagrees with the request to revise the compliance time
because the commenter did not submit sufficient data to substantiate an
acceptable level of safety. However, the FAA will consider requests for
approval of AMOCs and compliance times if sufficient data is submitted
to substantiate the changes would provide an acceptable level of
safety.
Request To Add Inspections and Change Compliance Time for Airplanes
Modified per VT MAE STC ST03562AT or ST03952AT
FedEx and VT MAE requested the FAA add inspections for airplanes
modified from a passenger configuration to a cargo configuration. VT
MAE stated that under STCs ST03562AT and ST03952AT, the main deck cargo
door surround cutout structure is similar in design to Boeing Model
757-200 airplanes in a special freighter configuration under STC
ST00916WI-D (identified as Group 6 in Boeing Alert Requirements
Bulletin 757-53A0119 RB, dated October 12, 2022). Thus, VT MAE
requested that airplanes modified under STC ST03562AT or ST03952AT be
inspected as specified in Boeing Alert Requirements Bulletin 757-
53A0119 RB, dated October 12, 2022, including the inspection at the
door cutout lower corners of the main deck cargo door specified for
Group 6 in Table 5. FedEx made the same request regarding airplanes
modified under STC ST03562AT.
The FAA agrees that Model 757-200 airplanes modified under VT MAE
STC ST03562AT or ST03952AT should be subject to the same inspections as
those required for Model 757-200 airplanes modified under STC
ST00916WI-D (Group 6 in the service information), due to the similar
design. The FAA has added paragraph (g)(3) of this proposed AD to
require these additional inspections.
VT MAE and FedEx also requested the FAA change the proposed
compliance time to start after the airplane is converted from passenger
to cargo configuration for the inspection at the door cutout lower
corners of main deck cargo door. The commenters stated that the cutout
structure surrounding the main deck cargo doors are added during
passenger-to-cargo conversion, rather than when the airplanes are
manufactured.
The FAA disagrees with the request to revise the compliance time
because the commenters did not submit sufficient data to substantiate
an acceptable level of safety. However, the FAA will consider requests
for approval of alternative compliance times as an AMOC if sufficient
data is submitted to substantiate the change would provide an
acceptable level of safety.
[[Page 60906]]
Request To Clarify Exceptions Paragraph
FedEx requested the FAA clarify paragraph (h)(2) of the proposed AD
and provided suggested language.
The FAA determined that the language provided by the commenter is
identical to the language in paragraph (h)(2) of the proposed AD.
However, the FAA has revised the language in paragraph (h)(2) of this
proposed AD to clarify which conditions the exception applies to.
FAA's Determination
The FAA is issuing this SNPRM after determining the unsafe
condition described previously is likely to exist or develop in other
products of the same type design. Certain changes described above
expand the scope of the NPRM. As a result, it is necessary to reopen
the comment period to provide additional opportunity for the public to
comment on this SNPRM.
Related Service Information Under 1 CFR Part 51
The FAA reviewed Boeing Alert Requirements Bulletin 757-53A0119 RB,
dated October 12, 2022. This service information specifies procedures
for either a general visual inspection or a maintenance records check
for repairs in the areas around the fuselage skin door cutout lower
corners of the No. 1, No. 2, and No. 4 passenger entry doors; crew
entry door; No. 1, No. 2, and No. 3 cargo doors; and main deck cargo
door; and applicable on-condition actions, including repetitive low
frequency and high frequency eddy current inspections for cracks in the
skin or bear strap in the unrepaired areas, and crack 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.
Proposed AD Requirements in This SNPRM
This proposed AD would require accomplishing the actions specified
in the service information already described, except for any
differences identified as exceptions in the regulatory text of this
proposed AD. For information on the procedures and compliance times,
see this service information at <a href="http://regulations.gov">regulations.gov</a> by searching for and
locating Docket No. FAA-2023-0017.
Costs of Compliance
The FAA estimates that this AD, if adopted as proposed, would
affect 482 airplanes of U.S. registry. The FAA estimates the following
costs to comply with this proposed AD:
Estimated Costs
----------------------------------------------------------------------------------------------------------------
Cost per Cost on U.S.
Action Labor cost Parts cost product operators
----------------------------------------------------------------------------------------------------------------
General visual inspection for repairs. 1 work-hour x $85 per $0 $85 $40,970
hour = $85.
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The FAA estimates the following costs to do any necessary on-
condition actions that would be required based on the results of the
proposed inspection. The agency has no way of determining the number of
airplanes that might need these on-condition actions:
On-Condition Costs
----------------------------------------------------------------------------------------------------------------
Action Labor cost Parts cost Cost per product
----------------------------------------------------------------------------------------------------------------
Inspections for cracks.................. Up to 27 work-hours x $85 $0 Up to $2,295 per
per hour = Up to $2,295 inspection cycle.
per inspection cycle.
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The extent of cracking found during the on-condition inspection
could vary significantly from airplane to airplane. The FAA has no way
of determining the extent of cracking that may be found on each
airplane, the cost to repair the cracking on each airplane, or the
number of airplanes that may require repair.
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
The FAA determined that this proposed AD would not have federalism
implications under Executive Order 13132. This proposed AD would not
have a substantial direct effect on the States, on the relationship
between the national Government and the States, or on the distribution
of power and responsibilities among the various levels of government.
For the reasons discussed above, I certify this proposed
regulation:
(1) Is not a ``significant regulatory action'' under Executive
Order 12866,
(2) Would not affect intrastate aviation in Alaska, and
(3) Would not have a significant economic impact, positive or
negative, on a substantial number of small entities under the criteria
of the Regulatory Flexibility Act.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Incorporation by
reference, Safety.
The Proposed Amendment
Accordingly, under the authority delegated to me by the
Administrator, the FAA proposes to amend 14 CFR part 39 as follows:
[[Page 60907]]
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:
The Boeing Company: Docket No. FAA-2023-0017; Project Identifier AD-
2022-01418-T.
(a) Comments Due Date
The FAA must receive comments on this airworthiness directive
(AD) by October 23, 2023.
(b) Affected ADs
None.
(c) Applicability
(1) This AD applies to all The Boeing Company Model 757-200, -
200PF, -200CB, and -300 series airplanes, certificated in any
category.
(2) Installation of Supplemental Type Certificate (STC)
ST01518SE does not affect the ability to accomplish the actions
required by this AD. Therefore, for airplanes on which STC ST01518SE
is installed, a ``change in product'' alternative method of
compliance (AMOC) approval request is not necessary to comply with
the requirements of 14 CFR 39.17.
(d) Subject
Air Transport Association (ATA) of America Code 53, Fuselage.
(e) Unsafe Condition
This AD was prompted by the potential for cracks to start in
hidden areas underneath the scuff plates in the fuselage skin and
bear strap of certain doors. The FAA is issuing this AD to address
cracks caused by higher fatigue stresses at the fuselage skin door
cutout lower corners. This unsafe condition, if not addressed, could
adversely affect the structural integrity of the airplane.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Required Actions
(1) For all airplanes: Except as specified by paragraph (h) of
this AD, at the applicable times specified in the ``Compliance''
paragraph of Boeing Alert Requirements Bulletin 757-53A0119 RB,
dated October 12, 2022, do all applicable actions identified in, and
in accordance with, the Accomplishment Instructions of Boeing Alert
Requirements Bulletin 757-53A0119 RB, dated October 12, 2022.
(2) For Model 757-200 series airplanes that have been modified
from a passenger to cargo configuration under VT Mobile Aerospace
Engineering (VT MAE) STC ST04242AT: Except as specified by paragraph
(h) of this AD, at the applicable times specified in Table 4 and
Table 5 of the ``Compliance'' paragraph of Boeing Alert Requirements
Bulletin 757-53A0119 RB, dated October 12, 2022, do all applicable
actions for Group 4 identified in, and in accordance with, Table 4
and Table 5 of the Accomplishment Instructions of Boeing Alert
Requirements Bulletin 757-53A0119 RB, dated October 12, 2022.
(3) For Model 757-200 series airplanes that have been modified
from a passenger to cargo configuration under VT MAE STC ST03562AT
or ST03952AT: Except as specified by paragraph (h) of this AD, at
the applicable times specified in Table 5 of the ``Compliance''
paragraph of Boeing Alert Requirements Bulletin 757-53A0119 RB,
dated October 12, 2022, do all applicable actions for Group 6
identified in, and in accordance with, Table 5 of the Accomplishment
Instructions of Boeing Alert Requirements Bulletin 757-53A0119 RB,
dated October 12, 2022.
Note 1 to paragraph (g): Guidance for accomplishing the actions
required by this AD can be found in Boeing Alert Service Bulletin
757-53A0119, dated October 12, 2022, which is referred to in Boeing
Alert Requirements Bulletin 757-53A0119 RB, dated October 12, 2022.
(h) Exceptions to Service Information Specifications
(1) Where the Compliance Time columns of the tables in the
``Compliance'' paragraph of Boeing Alert Requirements Bulletin 757-
53A0119 RB, dated October 12, 2022, use the phrase ``the original
issue date of Requirements Bulletin 757-53A0119 RB,'' this AD
requires using ``the effective date of this AD.''
(2) Where Boeing Alert Requirements Bulletin 757-53A0119RB,
dated October 12, 2022, specifies performing a general visual
inspection (GVI) or a maintenance records check for any existing
repair, if only a maintenance records check is accomplished with no
GVI, then any initial high frequency eddy current (HFEC) or low
frequency eddy current (LFEC) inspection with a compliance time of
before further flight must be done prior to the accumulation of
30,000 total flight cycles, or within 3,000 flight cycles after the
effective date of this AD, whichever occurs later.
(3) Where Boeing Alert Requirements Bulletin 757-53A0119 RB,
dated October 12, 2022, specifies contacting Boeing for repair
instructions or for alternative inspections: This AD requires doing
the repair, or doing the alternative inspections and applicable on-
condition actions, before further flight using a method approved in
accordance with the procedures specified in paragraph (i) of this
AD.
(i) AMOCs
(1) The Manager, AIR-520, Continued Operational Safety 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 Continued Operational
Safety Branch, send it to the attention of the person identified in
paragraph (j) of this AD. Information may be emailed to: <a href="/cdn-cgi/l/email-protection#695044282724443a0c081d1d050c44282a26442824262a443b0c181c0c1a1d1a290f0808470e061f"><span class="__cf_email__" data-cfemail="764f5b37383b5b25131702021a135b3735395b373b39355b24130703130502053610171758111900">[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, AIR-
520, Continued Operational Safety Branch, to make those findings. To
be approved, the repair method, modification deviation, or
alteration deviation must meet the certification basis of the
airplane, and the approval must specifically refer to this AD.
(j) Related Information
(1) For more information about this AD, contact Wayne Ha,
Aviation Safety Engineer, FAA, 3960 Paramount Boulevard, Lakewood,
CA 90712; phone: 562-627-5238; email: <a href="/cdn-cgi/l/email-protection#2b5c4a52454e05434a6b4d4a4a054c445d"><span class="__cf_email__" data-cfemail="bdcadcc4d3d893d5dcfddbdcdc93dad2cb">[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 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 757-53A0119 RB, dated
October 12, 2022.
(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; website <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#84e2f6aaedeaf7f4e1e7f0edebeac4eae5f6e5aae3ebf2"><span class="__cf_email__" data-cfemail="fd9b8fd394938e8d989e89949293bd939c8f9cd39a928b">[email protected]</span></a>, or go to: <a href="http://www.archives.gov/federal-register/cfr/ibr-locations.html">www.archives.gov/federal-register/cfr/ibr-locations.html</a>.
Issued on August 23, 2023.
Victor Wicklund,
Deputy Director, Compliance & Airworthiness Division, Aircraft
Certification Service.
[FR Doc. 2023-18839 Filed 9-5-23; 8:45 am]
BILLING CODE 4910-13-P
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