[Federal Register Volume 90, Number 143 (Tuesday, July 29, 2025)]
[Rules and Regulations]
[Pages 35594-35599]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2025-14354]
=======================================================================
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2025-1722; Project Identifier AD-2025-01176-T;
Amendment 39-23094; AD 2025-15-07]
RIN 2120-AA64
Airworthiness Directives; The Boeing Company Airplanes
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final rule; request for comments.
-----------------------------------------------------------------------
SUMMARY: The FAA is superseding Airworthiness Directive (AD) 2025-01-
08, which applied to all The Boeing Company Model 747-200B, 747-200C,
747-200F, 747-300, 747-400, 747-400D, 747-400F, 747-8F, and 747-8
series airplanes. AD 2025-01-08 required identifying the part number,
and the serial number if applicable, of the Captain's and First
Officer's seats and applicable on-condition actions for affected seats.
AD 2025-01-08 also required a one-time detailed inspection and
repetitive checks of the horizontal movement system (HMS) of the
Captain's and First Officer's seats and applicable on-condition
actions. Since the FAA issued AD 2025-01-08, the FAA determined that AD
2025-01-08 contains an error when providing conditions for taking
credit using a previous revision of the service information. This AD
requires the actions of AD 2025-01-08 and revises paragraph (j) of this
AD to clarify which actions are not required. The FAA is issuing this
AD to address the unsafe condition on these products.
DATES: This AD is effective August 13, 2025.
The Director of the Federal Register approved the incorporation by
reference of certain publications listed in this AD as of March 19,
2025 (90 FR 9382, February 12, 2025).
The FAA must receive comments on this AD by September 12, 2025.
ADDRESSES: You may send comments, using the procedures found in 14 CFR
11.43 and 11.45, by any of the following methods:
Federal eRulemaking Portal: Go to regulations.gov. Follow
the instructions for submitting comments.
Fax: 202-493-2251.
Mail: U.S. Department of Transportation, Docket
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New
Jersey Avenue SE, Washington, DC 20590.
Hand Delivery: 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 regulations.gov by
searching for and locating Docket No. FAA-2025-1722; 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 street address for Docket
Operations is listed above.
Material Incorporated by Reference:
For Boeing material identified in this AD, contact Boeing
Commercial Airplanes, Attention: Contractual & Data Services (C&DS),
2600 Westminster Boulevard, MC 110-SK57, Seal Beach, CA 90740-5600;
phone 562-797-1717; website myboeingfleet.com.
You may view this material 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-2025-1722.
FOR FURTHER INFORMATION CONTACT: Julie Linn, Aviation Safety Engineer,
FAA, 2200 South 216th Street, Des Moines, WA 98198; phone 206-231-3584;
email [email protected].
SUPPLEMENTARY INFORMATION:
Comments Invited
The FAA invites you to send any written data, views, or arguments
about this final rule. Send your comments using a method listed under
the ADDRESSES section. Include ``Docket No.
[[Page 35595]]
FAA-2025-1722 and Project Identifier AD-2025-01176-T'' at the beginning
of your comments. The most helpful comments reference a specific
portion of the final rule, explain the reason for any recommended
change, and include supporting data. The FAA will consider all comments
received by the closing date and may amend this final rule 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
regulations.gov, including any personal information you provide. The
agency will also post a report summarizing each substantive verbal
contact received about this final rule.
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 AD 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 AD, 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 AD. Submissions containing CBI should be sent to Julie
Linn, Aviation Safety Engineer, FAA, 2200 South 216th Street, Des
Moines, WA 98198; phone 206-231-3584; email [email protected]. 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 AD 2025-01-08, Amendment 39-22932 (90 FR 9382,
February 12, 2025) (AD 2025-01-08), for all The Boeing Company Model
747-200B, 747-200C, 747-200F, 747-300, 747-400, 747-400D, 747-400F,
747-8F, and 747-8 series airplanes. AD 2025-01-08 superseded AD 2019-
22-02, Amendment 39-19781 (84 FR 67854, December 12, 2019), and
required identifying the part number, and the serial number if
applicable, of the Captain's and First Officer's seats and applicable
on-condition actions for affected seats, including inspecting the fore
and aft and vertical manual control levers for looseness, installing
serviceable seats, and doing a seat functional test after any cable
adjustment. AD 2025-01-08 also required a one-time detailed inspection
and repetitive checks of the HMS of the Captain's and First Officer's
seats and applicable on-condition actions, including clearing the seat
tracks of foreign object debris (FOD), overhauling the HMS, and
replacing the horizontal stabilizer. AD 2025-01-08 was prompted by
reports of uncommanded fore and aft movement of the Captain's and First
Officer's seats. The FAA issued AD 2025-01-08 to address uncommanded
fore and aft movement of the Captain's and First Officer's seats which,
during a critical part of a flight such as takeoff or landing, could
cause a flight control obstruction or unintended flight control input,
which could result in the loss of the ability to control the airplane.
Actions Since AD 2025-01-08 Was Issued
Since the FAA issued AD 2025-01-08, the FAA determined that
paragraph (j) of AD 2025-01-08 inadvertently provided credit for the
actions in both paragraphs (g) and (h) of AD 2025-01-08 for a seat that
met the criteria in any row in Table 1 to paragraph (j) of AD 2025-01-
08. The FAA intended to provide credit for the actions in paragraph (g)
of AD 2025-01-08 if the airplane records show that a seat meets the
conditions pertaining to Boeing Special Attention Service Bulletin 747-
25-3644, Revision 1, dated July 17, 2018; and credit for the actions in
paragraph (h) of AD 2025-01-08 if the airplane records show that an
Ipeco Captain's or First Officer's seat meets the conditions pertaining
to Boeing Special Attention Service Bulletin 747-25-3653, Revision 1,
dated October 19, 2018.
FAA's Determination
The FAA is issuing this AD because the agency has determined the
unsafe condition described previously is likely to exist or develop in
other products of the same type design.
Material Incorporated by Reference Under 1 CFR Part 51
The FAA reviewed Boeing Special Attention Service Bulletin 747-25-
3644, Revision 2, dated January 27, 2023, which the Director of the
Federal Register approved for incorporation by reference as of March
19, 2025 (90 FR 9382, February 12, 2025).
The FAA also reviewed Boeing Special Attention Service Bulletin
747-25-3653, Revision 2, dated January 27, 2023, which the Director of
the Federal Register approved for incorporation by reference as of
March 19, 2025 (90 FR 9382, February 12, 2025).
This material 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.
AD Requirements
This AD retains all requirements of AD 2025-10-08, except that this
AD corrects paragraph (j) of AD 2025-01-08. This AD requires
accomplishing the actions specified in the material already described,
except for any differences identified as exceptions in the regulatory
text of this AD.
Justification for Immediate Adoption and Determination of the Effective
Date
Section 553(b) of the Administrative Procedure Act (APA) (5 U.S.C.
551 et seq.) authorizes agencies to dispense with notice and comment
procedures for rules when the agency, for ``good cause,'' finds that
those procedures are ``impracticable, unnecessary, or contrary to the
public interest.'' Under this section, an agency, upon finding good
cause, may issue a final rule without providing notice and seeking
comment prior to issuance. Further, section 553(d) of the APA
authorizes agencies to make rules effective in less than thirty days,
upon a finding of good cause.
An unsafe condition exists that requires the immediate adoption of
this AD without providing an opportunity for public comments prior to
adoption. The FAA has found that the risk to the flying public
justifies forgoing notice and comment prior to adoption of this rule
because of the urgency to correct AD 2025-01-08 to ensure compliance.
AD 2025-01-08 does not fully address the unsafe condition because it
allows operators to forego complying with required corrective actions
and inspections when the Captain's or First Officer's seat has not met
the necessary conditions. Paragraph (j) of AD 2025-01-08 incorrectly
provides credit for all actions in the AD when the credit should be
tied to the service information applicable to the airplane
configuration. Without limiting the extent of the credit given, the
unsafe condition still exists. Accordingly, notice and opportunity for
prior public comment are impracticable and contrary to the public
interest, pursuant to 5 U.S.C. 553(b).
In addition, for the foregoing reason(s), the FAA finds that good
cause exists pursuant to 5 U.S.C. 553(d) for making this amendment
effective in less than 30 days.
[[Page 35596]]
Regulatory Flexibility Act
The requirements of the Regulatory Flexibility Act (RFA) do not
apply when an agency finds good cause pursuant to 5 U.S.C. 553 to adopt
a rule without prior notice and comment. Because the FAA has determined
that it has good cause to adopt this rule without notice and comment,
RFA analysis is not required.
Costs of Compliance
The FAA estimates that this AD affects 162 airplanes of U.S.
registry. The FAA estimates the following costs to comply with this AD:
Estimated Costs for Required Actions per Seat
----------------------------------------------------------------------------------------------------------------
Cost on U.S.
Action Labor cost Parts cost Cost per product operators
----------------------------------------------------------------------------------------------------------------
Identification, seat (retained 1 work-hour x $85 $0 $85................. $13,770.
actions from AD 2025-01-08). per hour = $85.
Detailed inspection, HMS (retained 1 work-hour x $85 0 $85................. $13,770.
actions from AD 2025-01-08). per hour = $85.
Checks, HMS (retained actions from 2 work-hours x $85 0 $170 per check cycle $27,540 per check
AD 2025-01-08). per hour = $170 per cycle.
check cycle.
----------------------------------------------------------------------------------------------------------------
The FAA estimates the following costs to do any on-condition
actions that would be required based on the results of the inspection.
The FAA has no way of determining the number of aircraft that might
need these on-condition actions:
On-Condition Actions per Seat *
----------------------------------------------------------------------------------------------------------------
Action Labor cost Parts cost Cost per product
----------------------------------------------------------------------------------------------------------------
Adjustment, control lever cable 1 work-hour x $85 $0........................... $85.
per hour = $85.
Overhaul, HMS.................. 11 work-hours x Up to $5,824................. Up to $6,759.
$85 per hour =
$935.
Inspection of each seat's fore/ 1 work-hour x $85 $0........................... $85 per seat.
aft and vertical manual per hour = $85
control levers. per seat.
Installation of serviceable 1 work-hour x $85 $0........................... $85 per seat.
seats. per hour = $85
per seat.
Clearing FOD................... 1 work-hour x $85 $0........................... $85 per seat.
per hour = $85
per seat.
Replacement of the horizontal 1 work-hour x $85 $7,937 per actuator.......... $8,022 per actuator.
actuator. per hour = $85
per actuator.
Operational test, adjusted 1 work-hour x $85 $0........................... $85 per seat.
control lever cable. per hour = $85
per seat.
----------------------------------------------------------------------------------------------------------------
* The estimated cost for tooling to align an affected seat for adjustment of the control lever cable is up to
$46,064.
The FAA has received no definitive data that would enable the FAA
to provide cost estimates for the optional terminating action for the
repetitive checks specified in this AD.
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, and
(2) Will not affect intrastate aviation in Alaska.
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:
0
a. Removing Airworthiness Directive (AD) 2025-01-08, Amendment 39-22932
(90 FR 9382, February 12, 2025); and
0
b. Adding the following new AD:
2025-15-07 The Boeing Company: Amendment 39-23094; Docket No. FAA-
2025-1722; Project Identifier AD-2025-01176-T.
(a) Effective Date
This airworthiness directive (AD) is effective August 13, 2025.
(b) Affected ADs
This AD replaces AD 2025-01-08, Amendment 39-22932 (90 FR 9382,
February 12, 2025) (AD 2025-01-08).
(c) Applicability
This AD applies to all The Boeing Company Model 747-200B, 747-
200C, 747-200F, 747-300, 747-400, 747-400D, 747-
[[Page 35597]]
400F, 747-8F, and 747-8 series airplanes, certificated in any
category.
(d) Subject
Air Transport Association (ATA) of America Code 25, Equipment/
furnishings.
(e) Unsafe Condition
This AD was prompted by reports of uncommanded fore and aft
movement of the Captain's and First Officer's seats. The FAA is
issuing this AD to address uncommanded fore and aft movement of the
Captain's and First Officer's seats. The unsafe condition, if not
addressed, could result in an uncommanded fore or aft seat movement
during a critical part of a flight, such as takeoff or landing, and
could cause a flight control obstruction or unintended flight
control input, which could result in the loss of the ability to
control the airplane.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Seat Part Number Identification and On-Condition Actions
Except as specified by paragraphs (i) and (j) of this AD: At the
applicable times specified in the ``Compliance'' paragraph of Boeing
Special Attention Service Bulletin 747-25-3644, Revision 2, dated
January 27, 2023, do an inspection to determine the part number, and
serial number as applicable, of the Captain's and First Officer's
seats, and all applicable on-condition actions identified in, and in
accordance with the Accomplishment Instructions of Boeing Special
Attention Service Bulletin 747-25-3644, Revision 2, dated January
27, 2023. A review of airplane maintenance records is acceptable in
lieu of this inspection if the part number and serial number of the
Captain's and First Officer's seats can be conclusively determined
from that review.
(h) Detailed Inspection, and Repetitive Checks of Horizontal Movement
System and On-Condition Actions
Except as specified by paragraphs (i) and (j) of this AD: At the
applicable times specified in the ``Compliance'' paragraph of Boeing
Special Attention Service Bulletin 747-25-3653, Revision 2, dated
January 27, 2023, do all applicable actions identified as ``RC''
(required for compliance) in, and in accordance with, the
Accomplishment Instructions of Boeing Special Attention Service
Bulletin 747-25-3653, Revision 2, dated January 27, 2023. Actions
identified as terminating action in Boeing Special Attention Service
Bulletin 747-25-3653, Revision 2, dated January 27, 2023, terminate
the applicable required actions of this AD, provided the terminating
action is done in accordance with the Accomplishment Instructions of
Boeing Special Attention Service Bulletin 747-25-3653, Revision 2,
dated January 27, 2023.
(i) Exceptions to Service Information Specifications
(1) Where the ``Compliance'' paragraph of Boeing Special
Attention Service Bulletin 747-25-3653, Revision 2, dated January
27, 2023, refers to the original issue date of this service
bulletin, this AD requires using January 16, 2020 (the effective
date of AD 2019-22-02, Amendment 39-19781 (84 FR 67854, December 12,
2019) (AD 2019-22-02), which was superseded by AD 2025-01-08).
(2) Where the ``Compliance'' paragraph of Boeing Special
Attention Service Bulletin 747-25-3644, Revision 2, dated January
27, 2023, refers to 72 months after the original issue date of this
service bulletin, this AD requires using 36 months after January 16,
2020 (the effective date of AD 2019-22-02).
(3) Where the ``Compliance'' paragraph of Boeing Special
Attention Service Bulletin 747-25-3644, Revision 2, dated January
27, 2023, refers to the Revision 2 date of this service bulletin,
this AD requires using the March 19, 2025 (the effective date of AD
2025-01-08).
(j) Acceptable Conditions for Compliance
If the airplane records show that an Ipeco Captain's or First
Officer's seat installed on an airplane meets the conditions in any
of the eleven rows for Boeing Special Attention Service Bulletin
747-25-3644, Revision 1, dated July 17, 20218, in Table 1 to
paragraph (j) of this AD, then the actions in paragraph (g) of this
AD are not required for that seat. If the airplane records show that
an Ipeco Captain's or First Officer's seat meets the conditions in
any of the three rows for Boeing Special Attention Service Bulletin
747-25-3653, Revision 1, dated October 19, 2018, in Table 1 to
paragraph (j) of this AD, then the actions specified in paragraph
(h) of this AD are not required for that seat.
Table 1 to Paragraph (j)--Alternative Acceptable Seats
----------------------------------------------------------------------------------------------------------------
Actions done in accordance with Actions done in
Boeing Special Attention Service accordance with Ipeco Having Ipeco P/N-- And additional required
Bulletin-- Service Bulletin-- conditions--
----------------------------------------------------------------------------------------------------------------
747-25-3644, Revision 1, dated July None................... 3A258-0041-01-2 or No additional
17, 2018. 3A258-0042-01-2. conditions required.
747-25-3644, Revision 1, dated July 097-25-02, Issue 1, 3A090-0027-01-1 or The manual override
17, 2018. dated October 2, 2013; 3A090-0028-01-1. cable maintenance has
or Issue 2, dated been completed on the
March 28, 2014; or seat in accordance
Issue 3, dated March with the Ipeco
4, 2020. Component Maintenance
Manual 25-10-94,
Revision 10, dated
September 13, 2019, or
subsequent revisions
up to and including
Revision 15, dated
August 10, 2021.
747-25-3644, Revision 1, dated July 107-25-03, Issue 1, 3A090-0055-01-1 or The manual override
17, 2018. dated October 2, 2013; 3A090-0056-01-1. cable maintenance has
or Issue 2, dated been completed on the
March 28, 2014; or seat in accordance
Issue 3, dated March with the Ipeco
4, 2020. Component Maintenance
Manual 25-10-97,
Revision 14, dated
December 5, 2013, and
subsequent revisions
up to and including
Revision 22, dated
March 19, 2021.
747-25-3644, Revision 1, dated July 112-25-02, Issue 1, 3A090-0065-01-1 or The manual override
17, 2018. dated November 4, 3A090-0066-01-1. cable maintenance has
2013; or Issue 2, been completed on the
dated March 28, 2014; seat in accordance
or Issue 3, dated with the Ipeco
March 18, 2020; or Component Maintenance
Issue 4, dated May 7, Manual 25-11-01,
2021. Revision 9, dated
September 20, 2013,
and subsequent
revisions up to and
including Revision 18,
dated December 19,
2021.
747-25-3644, Revision 1, dated July 209-25-02, Issue 1, 3A090-0075-01-1 or The manual override
17, 2018. dated November 13, 3A090-0076-01-1. cable maintenance has
2013; or Issue 2, been completed on the
dated March 28, 2014; seat in accordance
or Issue 3, dated with the Ipeco
March 4, 2020. Component Maintenance
Manual 25-11-32,
Revision 4, dated
September 27, 2013,
and subsequent
revisions up to and
including Revision 9,
dated July 23, 2020.
[[Page 35598]]
747-25-3644, Revision 1, dated July 211-25-04, Issue 1, 3A090-0079-01-1 or The manual override
17, 2018. dated November 4, 3A090-0080-01-1. cable maintenance has
2013; or Issue 2, been completed on the
dated March 28, 2014; seat in accordance
or Issue 3, dated with the Ipeco
March 4, 2020. Component Maintenance
Manual 25-10-79,
Revision 23, dated
September 5, 2013, and
subsequent revisions
up to and including
Revision 31, dated
July 23, 2020.
747-25-3644, Revision 1, dated July 212-25-03, Issue 1, 3A090-0081-01-1 or The manual override
17, 2018. dated November 4, 3A090-0082-01-1. cable maintenance has
2013; or Issue 2, been completed on the
dated March 28, 2014; seat in accordance
or Issue 3, dated with the Ipeco
March 4, 2020. Component Maintenance
Manual 25-10-80,
Revision 9, dated
September 27, 2013,
and subsequent
revisions up to and
including Revision 15,
dated July 23, 2020.
747-25-3644, Revision 1, dated July 258-25-08, Issue 4, 3A258-0041-01-1 or Does not have a serial
17, 2018. dated April 25, 2014; 3A258-0042-01-1. number identified by
or Issue 5, dated the effectivity of the
March 4, 2020; or referenced Ipeco
Issue 6, dated January Service Bulletins.
28, 2021.
747-25-3644, Revision 1, dated July 258-25-08, Issue 4, 3A258-0041-01-1 or The manual override
17, 2018. dated April 25, 2014; 3A258-0042-01-1. cable maintenance has
or Issue 5, dated been completed on the
March 4, 2020; or seat in accordance
Issue 6, dated January with the Ipeco
28, 2021. Component Maintenance
Manual 25-11-38,
Revision 21, dated
December 12, 2013, or
subsequent revisions
up to and including
Revision 53, dated
December 4, 2023.
747-25-3644, Revision 1, dated July 258-25-08, Issue 6, 3A258-0041-01-1Z or Does not have a serial
17, 2018. dated January 28, 2021. 3A258-0042-01-1Z. number identified by
the effectivity of the
referenced Ipeco
Service Bulletin.
747-25-3644, Revision 1, dated July 258-25-08, Issue 6, 3A258-0041-01-1Z or The manual override
17, 2018. dated January 28, 2021. 3A258-0042-01-1Z. cable maintenance has
been completed on the
seat in accordance
with the Ipeco
Component Maintenance
Manual 25-11-38,
Revision 21, dated
December 12, 2013, or
subsequent revisions
up to and including
Revision 53, dated
December 4, 2023.
747-25-3653, Revision 1, dated None................... 3A258-0041-01-2, 3A258- No additional
October 19, 2018. 0041-01-1Z, 3A258-0042- conditions required.
01-2 or 3A258-0042-01-
1Z.
747-25-3653, Revision 1, dated 258-25-13, Issue 3, 3A258-0041-01-1 or Has a horizontal
October 19, 2018. dated November 27, 3A258-0042-01-1. actuator with Artus
2017; or Issue 4, part number AD8650503
dated April 28, 2020, at ``Amendment C'' or
or Issue 5; dated later.
November 1, 2021.
747-25-3653, Revision 1, dated 258[dash]25[dash]14, 3A258-0041-01-1 or Has a horizontal
October 19, 2018. Issue 4, dated January 3A258-0042-01-1. actuator with Artus
29, 2018; or Issue 5, part number AD8650503
dated April 28, 2020. at ``Amendment C'' or
later.
----------------------------------------------------------------------------------------------------------------
(k) Alternative Methods of Compliance (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 certification office,
send it to the attention of the person identified in paragraph (l)
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, AIR-
520, Continued Operational Safety 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) Except as required by paragraph (i) of this AD: For material
that contains steps that are labeled as Required for Compliance
(RC), the provisions of paragraphs (k)(4)(i) and (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. If a step or substep is labeled ``RC Exempt,'' then the
RC requirement is removed from that step or substep. 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.
[[Page 35599]]
(l) Related Information
For more information about this AD, contact Julie Linn, Aviation
Safety Engineer, FAA, 2200 South 216th Street, Des Moines, WA 98198;
phone 206-231-3584; email [email protected].
(m) Material Incorporated by Reference
(1) The Director of the Federal Register approved the
incorporation by reference (IBR) of the material listed in this
paragraph under 5 U.S.C. 552(a) and 1 CFR part 51.
(2) You must use this material as applicable to do the actions
required by this AD, unless this AD specifies otherwise.
(3) The following material was approved for IBR on March 19,
2025 (90 FR 9382, February 12, 2025).
(i) Boeing Special Attention Service Bulletin 747-25-3644,
Revision 2, dated January 27, 2023.
(ii) Boeing Special Attention Service Bulletin 747-25-3653,
Revision 2, dated January 27, 2023.
(4) For Boeing material identified in this AD, contact Boeing
Commercial Airplanes, Attention: Contractual & Data Services (C&DS),
2600 Westminster Boulevard, MC 110-SK57, Seal Beach, CA 90740-5600;
phone 562-797-1717; website myboeingfleet.com.
(5) You may view this material 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.
(6) You may view this material at the National Archives and
Records Administration (NARA). For information on the availability
of this material at NARA, visit www.archives.gov/federal-register/cfr/ibr-locations or email [email protected].
Issued on July 25, 2025.
Peter A. White,
Deputy Director, Integrated Certificate Management Division, Aircraft
Certification Service.
[FR Doc. 2025-14354 Filed 7-28-25; 8:45 am]
BILLING CODE 4910-13-P