Federal Register / Vol. 90, No. 22 / Tuesday, February 4, 2025 / Rules and Regulations 8879 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2024–2136; Project 

Identifier AD–2023–00296–T; Amendment 

39–22930; AD 2025–01–06] 

RIN 2120–AA64 

Airworthiness Directives; The Boeing 

Company Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: The FAA is superseding 

Airworthiness Directive (AD) 2019–14– 

13, which applies to all The Boeing 

Company Model 767–200, –300, –300F, 

and –400ER series airplanes. AD 2019– 

14–13 required identifying the part 

number, and the serial number if 

applicable, of the Captain’s and First 

Officer’s seats, and performing 

applicable on-condition actions for 

affected seats. AD 2019–14–13 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. AD 

2019–14–13 also provided an optional 

terminating action for the repetitive 

actions for certain seats. This AD was 

prompted by reports of uncommanded 

fore and aft movement of the Captain’s 

and First Officer’s seats. This AD retains 

the actions in AD 2019–14–13 and adds 

an inspection of previously omitted part 

numbers. The FAA is issuing this AD to 

address the unsafe condition on these 

products. 

DATES: This AD is effective March 11, 

2025. 

The Director of the Federal Register 

approved the incorporation by reference 

of certain publications listed in this AD 

as of March 11, 2025. 

ADDRESSES: 

AD Docket: You may examine the AD 

docket at regulations.gov under Docket 

No. FAA–2024–2136; 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 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–2024–2136. 

FOR FURTHER INFORMATION CONTACT: 

Courtney Tuck, Aviation Safety 

Engineer, FAA, 2200 South 216th Street, 

Des Moines, WA 98198; phone 206– 

231–3986; email Courtney.K.Tuck@

faa.gov. 

SUPPLEMENTARY INFORMATION: 

Background 

The FAA issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 to supersede AD 2019–14–13, 

Amendment 39–19691 (84 FR 38855, 

August 8, 2019) (AD 2019–14–13). AD 

2019–14–13 applied to all The Boeing 

Company Model 767–200, –300, –300F, 

and –400ER series airplanes. The NPRM 

published in the Federal Register on 

September 9, 2024 (89 FR 73003). The 

NPRM was prompted by reports of 

uncommanded fore and aft movement of 

the Captain’s and First Officer’s seats. In 

the NPRM, the FAA proposed to 

continue to require the actions in AD 

2019–14–13 and add an inspection of 

previously omitted part numbers. The 

FAA is issuing this AD to address 

uncommanded fore and aft movement of 

the Captain’s and First Officer’s seats. 

An uncommanded fore or aft seat 

movement 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. 

Discussion of Final Airworthiness 

Directive 

Comments 

The FAA received comments from Air 

Line Pilots Association, International, 

Boeing, United Airlines, United Parcel 

Service Co., and three individuals, who 

supported the NPRM without change. 

The FAA received additional 

comments from Aviation Partners 

Boeing, Delta Airlines, and an 

individual. The following presents the 

comments received on the NPRM and 

the FAA’s response to each comment. 

Request for Phased Compliance Period 

for Smaller Carriers 

A individual commenter requested 

that the FAA provide a phased 

compliance period for smaller carriers 

and operators to allow them to plan 

inspections, repairs, and parts 

replacement without causing significant 

operational disruptions, especially for 

smaller fleets that may lack immediate 

access to specialized parts and labor. 

The FAA disagrees to provide a 

phased compliance period for smaller 

carriers. The compliance time set is 

standard across the entire affected fleet 

to ensure an adequate level of safety and 

is not dependent on the fleet size of 

each operator. The FAA has not 

changed this AD as a result of this 

comment. 

Request To Enhance Acceptable 

Methods of Compliance 

An individual commenter requested 

for the FAA to enhance the clarity of 

acceptable methods of compliance for 

operators using alternative maintenance 

programs. The commenter would like 

more concrete examples of compliance 

pathways, such as best practices for 

tracking seat conditions and recurring 

HMS inspections, to foster consistency 

across operators. The commenter added 

that it would also be helpful to publish 

detailed service guidelines on aligning 

seat part replacements with standard 

maintenance cycles to prevent 

unnecessary downtime. 

The FAA disagrees. Best practices and 

service guidelines to resolve the unsafe 

condition identified in an AD are 

typically provided by service 

information generated by the design 

approval holder. Operators may request 

approval of alternative methods of 

compliance with the requirements of an 

AD provided the alternative methods 

address the unsafe condition and 

provide an adequate level of safety. 

Guidance on requirements and best 

practices can be found in FAA Orders 

and Manuals. The FAA has not changed 

this AD as a result of this comment. 

Effect of Winglets on Accomplishment 

of the Proposed Actions 

Aviation Partners Boeing stated that 

the installation of winglets per 

Supplemental Type Certificate (STC) 

ST01920SE does not affect compliance 

with the proposed actions. 

The FAA agrees with the commenter 

that STC ST01920SE does not affect the 

accomplishment of the manufacturer’s 

service instructions, as noted in 

paragraph (c)(2) of the proposed AD. 

Therefore, the installation of STC 

ST01920SE does not affect the ability to 


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accomplish the actions required by this 

AD. The FAA has not changed this AD 

in this regard. 

Request To Revise Applicability 

The applicability in paragraph (c)(1) 

of the proposed AD included all Model 

767–200, –300, –300F, and –400ER 

series airplanes. Delta Airlines noted 

that Boeing Special Attention Service 

Bulletins 767–25–0539 and 767–25– 

0549, both Revision 2, dated January 27, 

2023, refer only to Ipeco Captain’s and 

First Officer’s seats. Delta requested a 

revision to the applicability of the 

proposed AD to be more specific by 

limiting the applicability to those 

airplanes equipped with powered Ipeco 

Captain’s and First Officer’s seat part 

number series 3A090 and 3A258 as 

specified in the ‘‘Compliance,’’ 

paragraph of Boeing Special Attention 

Service Bulletin 767–25–0539, Revision 

2, dated January 27, 2023. 

The FAA disagrees to revise 

paragraph (c) as suggested by Delta 

Airlines. All airplanes are included 

because it is required per paragraph (g) 

to inspect the part number, and serial 

number as applicable, of the Captain’s 

and First Officer’s seats to determine if 

the on-condition actions are applicable. 

The FAA has not changed this AD as a 

result of this comment. 

Change to Proposed AD 

In the proposed AD, the first two 

column headings in figure 1 to 

paragraph (j) were ‘‘Installation per 

Boeing Special Attention Service 

Bulletin’’ and ‘‘And installation per 

IPECO Service Bulletin.’’ Since these 

documents are provided for guidance to 

the operators on how to comply with a 

safety issue, those column headings 

have been changed in this AD to 

‘‘Actions done in accordance with 

Boeing Special Attention Service 

Bulletin’’ and ‘‘Actions done in 

accordance with Ipeco Service 

Bulletin,’’ respectively. 

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. 

Material Incorporated by Reference 

Under 1 CFR Part 51 

The FAA reviewed Boeing Special 

Attention Service Bulletin 767–25– 

0539, Revision 2, dated January 27, 

2023. This material specifies procedures 

for identification of the part number, 

and the serial number if applicable, of 

the Captain’s and First Officer’s seats, 

and applicable on-condition actions. 

On-condition actions include an 

inspection of each seat’s fore and aft and 

vertical manual control levers for 

looseness, installation of serviceable 

seats, and a seat operational test after 

any cable adjustment. This material also 

adds Ipeco seat part numbers 3A258– 

0007–01–1Z, 3A258–0008–01–1Z, 

3A258–0041–01–1Z, 3A258–0042–01– 

1Z, and 3A090–0078–04–1. This 

material also adds Ipeco seat part 

numbers 3A090–0078–03–1 and 3A090– 

0078–05–1, that were previously 

removed in Boeing Special Attention 

Service Bulletin 767–25–0539, Revision 

1, dated January 9, 2014. 

The FAA also reviewed Boeing 

Special Attention Service Bulletin 767– 

25–0549, Revision 2, dated January 27, 

2023. This material specifies procedures 

for a detailed inspection and repetitive 

checks of the HMS (including for any 

Artus part and amendment numbers of 

the horizontal actuator of the HMS) for 

the Captain’s and First Officer’s seats for 

findings (e.g., evidence of cracks, scores, 

corrosion, dents, deformation, or visible 

wear; and incorrectly assembled 

microswitch assemblies, actuators, and 

limit switches), and applicable oncondition actions. The on-condition 

actions include clearing the seat tracks 

of foreign object debris (FOD), 

overhauling the HMS, and replacing the 

horizontal actuator. The material also 

describes procedures for an optional 

terminating action for the repetitive 

checks by installing a serviceable 

Captain’s or First Officer’s seat. The 

service information adds Ipeco seat part 

number 3A090–0078–03–1, 3A090– 

0078–04–1, and 3A090–0078–05–1. 

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. 

Costs of Compliance 

The FAA estimates that this AD 

affects 694 airplanes of U.S. registry. 

The FAA estimates the following costs 

to comply with this AD: 

ESTIMATED COSTS FOR REQUIRED ACTIONS PER SEAT

Action Labor cost Parts 

cost Cost per product Cost on U.S. operators 

Identification, seat (retained actions from 

AD 2019–14–13).

1 work-hour × $85 per hour = $85 ........... $0 $85 .......................... $117,980. 

Detailed inspection, HMS (retained actions from AD 2019–14–13).1 work-hour × $85 per hour = $85 ........... 0 $85 .......................... Up to $117,980. 

Checks, HMS (retained from AD 2019– 

14–13).

2 work-hours × $85 per hour = $170, per 

check cycle.

0 $170, per check 

cycle.

Up to $235,960, per 

check cycle. 

The FAA estimates the following 

costs to do any on-condition actions that 

will be required. The FAA has no way 

of determining the number of aircraft 

that might need these on-condition 

actions: 

ESTIMATED COSTS OF ON-CONDITION ACTIONS * 

Action Labor cost Parts cost Cost per product 

Adjustment, control lever cable ............................................ 1 work-hour × $85 per hour = $85 ....... $0 ........................... $85. 

Overhaul, HMS ..................................................................... 11 work-hours × $85 per hour = $935 Up to $5,824 .......... Up to $6,759. 

Inspection of each seat’s fore/aft and vertical manual control levers.1 work-hour × $85 per hour = $85 per 

seat.

$0 ........................... $85 per seat. 

Installation of serviceable seats ........................................... 1 work-hour × $85 per hour = $85 per 

seat.

$0 ........................... $85 per seat. 


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ESTIMATED COSTS OF ON-CONDITION ACTIONS *—Continued 

Action Labor cost Parts cost Cost per product 

Clearing FOD ....................................................................... 1 work-hour × $85 per hour = $85 per 

seat.

$0 ........................... $85 per seat. 

Replacement of the horizontal actuator ............................... 1 work-hour × $85 per hour = $85 per 

actuator.

$7,937 per actuator $8,022 per actuator. 

Operational test, adjusted control lever cable ..................... 1 work-hour × $85 per hour = $85 per 

seat.

$0 ........................... $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, 

(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 

■ 1. The authority citation for part 39 

continues to read as follows: 

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

§ 39.13 [Amended] 

■ 2. The FAA amends § 39.13 by: 

■ a. Removing Airworthiness Directive 

(AD) 2019–14–13, Amendment 39– 

19691 (84 FR 38855, August 8, 2019); 

and 

■ b. Adding the following new AD: 

2025–01–06 The Boeing Company: 

Amendment 39–22930; Docket No. 

FAA–2024–2136; Project Identifier AD– 

2023–00296–T. 

(a) Effective Date 

This airworthiness directive (AD) is 

effective March 11, 2025. 

(b) Affected ADs 

This AD replaces AD 2019–14–13, 

Amendment 39–19691 (84 FR 38855, August 

8, 2019) (AD 2019–14–13). 

(c) Applicability 

(1) This AD applies to all The Boeing 

Company Model 767–200, –300, –300F, and 

–400ER series airplanes, certificated in any 

category. 

(2) Installation of Supplemental Type 

Certificate (STC) ST01920SE does not affect 

the ability to accomplish the actions required 

by this AD. Therefore, for airplanes on which 

STC ST01920SE 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 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 OnCondition Actions 

Except as specified in paragraphs (i) and (j) 

of this AD: At the applicable time specified 

in the ‘‘Compliance,’’ paragraph of Boeing 

Special Attention Service Bulletin 767–25– 

0539, 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, in 

accordance with the Accomplishment 

Instructions of Boeing Special Attention 

Service Bulletin 767–25–0539, 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 Bulletin 767–25– 

0549, 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 

Bulletin 767–25–0549, Revision 2, dated 

January 27, 2023. Actions identified as 

terminating action in Boeing Special 

Attention Bulletin 767–25–0549, 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 767–25–0549, Revision 2, 

dated January 27, 2023. 

(i) Exceptions to Service Information 

Specifications 

(1) Where the ‘‘Compliance’’ paragraph of 

Boeing Special Attention Bulletin 767–25– 

0549, Revision 2, dated January 27, 2023, 


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refers to the original issue date of the service 

bulletin, this AD requires using September 

12, 2019 (the effective date of AD 2019–14– 

13). 

(2) Where the ‘‘Compliance’’ paragraph of 

Boeing Special Attention Bulletin 767–25– 

0549, Revision 2, dated January 27, 2023, 

refers to the Revision 2 date of the service 

bulletin, this AD requires using the effective 

date of this AD. 

(3) Where the ‘‘Compliance’’ paragraph of 

Boeing Special Attention Service Bulletin 

767–25–0539, Revision 2, dated January 27, 

2023, refers to within 72 months after the 

original issue date of the service bulletin, this 

AD requires using within 36 months after 

September 12, 2019 (the effective date of AD 

2019–14–13). 

(4) Where the ‘‘Compliance’’ paragraph of 

Boeing Special Attention Bulletin 767–25– 

0539, Revision 2, dated January 27, 2023, 

refers to the Revision 2 date of the service 

bulletin, this AD requires using the effective 

date of this AD. 

(j) Acceptable Conditions for Compliance 

If the airplane records show that an Ipeco 

Captain’s or First Officer’s seat meets all 

criteria specified in any row in figure 1 to 

paragraph (j) of this AD, the actions specified 

in paragraphs (g) and (h) of this AD are not 

required for that seat. 

BILLING CODE 4910–13–P 


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Figure 1 to Paragraph (j)—Alternative 

Acceptable Seats 


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Actions done in 

accordance with And actions done in 

Boeing Special accordance with lpeco Having lpeco P/N - And additional required conditions -

Attention Service Service Bulletin -

Bulletin767-25-0539, Revision 1, None 3A258-0041-01-2 or No additional conditions required. dated July 17, 2018 3A258-0042-01-2 

The manual override cable maintenance 

098-25-03, Issue 1, has been completed on the seat in 

767-25-0539, Revision 1, dated October 2, 2013; 3A090-0025-01-1 or 

accordance with the lpeco Component 

or Issue 2, dated March Maintenance Manual 25-10-95, Revision dated July 17, 2018 28, 2014, or Issue 3, 3A090-0026-01-1 16, dated September 6, 2013, or 

dated March 4, 2020 subsequent revisions up to and including 

Revision 25, dated July 12, 2023. 

3A090-0077-01-1, The manual override cable maintenance 

210-25-04, Issue 1, 3A090-0077-02-1, has been completed on the seat in 

767-25-0539, Revision 1, dated November 4, 3A090-0078-01-1, accordance with the lpeco Component 

dated July 17, 2018 2013; or Issue 2, dated 3A090-0078-02-1, Maintenance Manual 25-10-78, Revision 

March 28, 2014; or Issue 3A090-0078-03-1, 20, dated September 12, 2013, or 

3, dated March 3, 2020 3A090-0078-04-1, subsequent revisions up to and including 

or 3A090-0078-05-1 Revision 29, dated October 13, 2023. 

The manual override cable maintenance 

258-25-08, Issue 4, has been completed on the seat in 

767-25-0539, Revision 1, dated April 25, 2014; or 3A258-0007-01-1 or 

accordance with the lpeco Component 

Issue 5, dated March 4, Maintenance Manual 25-11-26, Revision dated July 17, 2018 2020; or Issue 6, dated 3A258-0008-01-1 16, dated September 12, 2013, or 

January 28, 2021 subsequent revisions up to and including 

Revision 40, dated December 4, 2023. 

258-25-08, Issue 4, 

767-25-0539, Revision 1, dated April 25, 2014; or 3A258-0041-01 -1 or 

Does not have a serial number identified 

dated July 17, 2018 Issue 5, dated March 4, 3A258-0042-01-1 by the effectivity of the referenced lpeco 

2020; or Issue 6, dated Service Bulletins. 

January 28, 2021 

The manual override cable maintenance 

258-25-08, Issue 4, has been completed on the seat in 

767-25-0539, Revision 1, dated April 25, 2014; or 3A258-0041-01-1 or 

accordance with the lpeco Component 

Issue 5, dated March 4, Maintenance Manual 25-11-38, Revision dated July 17, 2018 2020; or Issue 6, dated 3A258-0042-01-1 21, dated December 12, 2013, or 

January 28, 2021 subsequent revisions up to and including 

Revision 38, dated December 2, 2023. 

The manual override cable maintenance 

has been completed on the seat in 

767-25-0539, Revision 1, 258-25-08, Issue 6, 3A258-0007-01-1Z accordance with the lpeco Component 

or 3A258-0008-01- Maintenance Manual 25-11-26, Revision dated July 17, 2018 dated January 28, 2021 1Z 16, dated September 12, 2013, or 

subsequent revisions up to and including 

Revision 40, dated December 4, 2023. 

767-25-0539, Revision 1, 258-25-08, Issue 6, 3A258-0041-01 -1 Z Does not have a serial number identified 

or 3A258-0042-01 - by the effectivity of the referenced lpeco dated July 17, 2018 dated January 28, 2021 1Z Service Bulletin. 
8884 Federal Register / Vol. 90, No. 22 / Tuesday, February 4, 2025 / Rules and Regulations 

BILLING CODE 4910–13–C 

(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: AMOC@

faa.gov. 

(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) AMOCs approved for AD 2019–14–13 

are approved as AMOCs for the 

corresponding provisions of Boeing Special 

Attention Service Bulletin 767–25–0539, 

Revision 2, dated January 27, 2023, and 

Boeing Special Attention Service Bulletin 

767–25–0549, Revision 2, dated January 27, 

2023, that are required by paragraphs (g) and 

(h) of this AD. 

(5) For service information that contains 

steps that are labeled as Required for 

Compliance (RC), the provisions of 

paragraphs (k)(5)(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 


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Actions done in 

accordance with And actions done in 

Boeing Special accordance with lpeco Having lpeco P/N - And additional required conditions -

Attention Service Service Bulletin -

BulletinThe manual override cable maintenance 

has been completed on the seat in 

767-25-0539, Revision 1, 258-25-08, Issue 6, 3A258-0041-01-12 accordance with the lpeco Component 

dated July 17, 2018 dated January 28, 2021 or 3A258-0042-01 - Maintenance Manual 25-11-38, Revision 

12 21, dated December 12, 2013, or 

subsequent revisions up to and including 

Revision 38, dated December 2, 2023. 

3A258-0007-01-2, 

3A258-0007-01-12, 

3A258-0008-01-2, 

767-25-0549, Revision 1, 3A258-0008-01-12, 

dated August 1 o, 2018 None 3A258-0041-01 -2, No additional conditions required. 

3A258-0041-01-12, 

3A258-0042-01 -2, 

or 3A258-0042-01-

12 

258-25-13, Issue 3, 

767-25-0549, Revision 1, dated November 27, 3A258-0041-01-1 or 

Has a horizontal actuator with Artus part 

dated August 10, 2018 2017; or Issue 4, dated 3A258-0042-01-1 number AD8650503 at "Amendment C" 

April 28, 2020; or Issue 5, or later. 

dated November 1, 2021 

258-25-14, Issue 4, 

767-25-0549, Revision 1, dated January 9, 2018; or 3A258-0041-01-1 or 

Has a horizontal actuator with Artus part 

dated August 1 o, 2018 Issue 5, dated April 28, 3A258-0042-01-1 number AD8650503 at "Amendment C" 

2020 or later. 

258-25-15, Issue 4, 

767-25-0549, Revision 1, dated February 16, 2018; 3A258-0007-01-1 or 

Has a horizontal actuator with Artus part 

dated August 1 o, 2018 or Issue 5, dated April 3A258-0008-01-1 number AD8650503 at "Amendment C" 

29, 2020; or Issue 6, or later. 

dated November 1, 2021 

258-25-16, Issue 4, 

767-25-0549, Revision 1, dated September 11, 3A258-0007-01-1 or 

Has a horizontal actuator with Artus part 

dated August 1 o, 2018 2017; or Issue 5, dated 3A258-0008-01-1 number AD8650503 at "Amendment C" 

April 29, 2020 or later. 
Federal Register / Vol. 90, No. 22 / Tuesday, February 4, 2025 / Rules and Regulations 8885 

still be done as specified, and the airplane 

can be put back in an airworthy condition. 

(l) Related Information 

For more information about this AD, 

contact Courtney Tuck, Aviation Safety 

Engineer, FAA, 2200 South 216th Street, Des 

Moines, WA 98198; phone 206–231–3986; 

email Courtney.K.Tuck@faa.gov. 

(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 the AD specifies otherwise. 

(i) Boeing Special Attention Service 

Bulletin 767–25–0539, Revision 2, dated 

January 27, 2023. 

(ii) Boeing Special Attention Service 

Bulletin 767–25–0549, Revision 2, dated 

January 27, 2023. 

(3) 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. 

(4) You may view this material at the FAA, 

Airworthiness Products Section, Operational 

Safety Branch, 2200 South 216th Street, Des 

Moines, WA. For information on the 

availability of this material at the FAA, call 

206–231–3195. 

(5) 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 fr.inspection@nara.gov. 

Issued on January 6, 2025. 

Suzanne Masterson, 

Deputy Director, Integrated Certificate 

Management Division, Aircraft Certification 

Service. 

[FR Doc. 2025–02146 Filed 2–3–25; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2024–0471; Project 

Identifier MCAI–2023–01213–T; Amendment 

39–22920; AD 2024–26–05] 

RIN 2120–AA64 

Airworthiness Directives; Airbus SAS 

Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: The FAA is adopting a new 

airworthiness directive (AD) for all 

Airbus SAS Model A300 B4–601, B4– 

603, B4–620, B4–622, B4–605R, B4– 

622R, C4–605R Variant F, F4–605R, and 

F4–622R airplanes; Model A310 series 

airplanes; Model A318, A319, A320, 

and A321 series airplanes; Model A330– 

200, –200 Freighter, and –300 series 

airplanes; Model A330–841 and –941 

airplanes; and Model A340–211, –212, 

–213, –311, –312, –313, –541, and –642 

airplanes. This AD was prompted by 

chemical oxygen generators that failed 

to activate in service and during 

maintenance activities. This AD 

requires replacing affected oxygen 

generators and prohibits the installation 

of affected parts, as specified in a 

European Union Aviation Safety Agency 

(EASA) AD, which is incorporated by 

reference. The FAA is issuing this AD 

to address the unsafe condition on these 

products. 

DATES: This AD is effective March 11, 

2025. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in this AD 

as of March 11, 2025. 

ADDRESSES: 

AD Docket: You may examine the AD 

docket at regulations.gov under Docket 

No. FAA–2024–0471; or in person at 

Docket Operations between 9 a.m. and 

5 p.m., Monday through Friday, except 

Federal holidays. The AD docket 

contains this final rule, the mandatory 

continuing airworthiness information 

(MCAI), 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 EASA material identified in this 

AD, contact EASA, Konrad-AdenauerUfer 3, 50668 Cologne, Germany; 

telephone +49 221 8999 000; email 

ADs@easa.europa.eu; website 

easa.europa.eu. You may find this 

material on the EASA website at 

ad.easa.europa.eu. 

• 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–2024–0471. 

FOR FURTHER INFORMATION CONTACT: Dan 

Rodina, Aviation Safety Engineer, FAA, 

1600 Stewart Avenue, Suite 410, 

Westbury, NY 11590; telephone 206– 

231–3225; email dan.rodina@faa.gov. 

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 Airbus SAS Model A300 

B4–601, B4–603, B4–620, B4–622, B4– 

605R, B4–622R, C4–620, C4–605R 

Variant F, F4–605R and F4–622R 

airplanes, Model 300 F4–608ST 

airplanes, Model A310–203, –203C, 

–204, –221, –222, –304, –308, –322, 

–324, and –325 airplanes, Model A318– 

111, –112, –121, and –122 airplanes, 

Model A319–111, –112, –113, –114, 

–115, –131, –132, –133, –151N, –153N, 

and –171N airplanes, Model A320–211, 

–212, –214, –215, –216, –231, –232, 

–233, –251N, –252N, –253N, –271N, 

–272N, and –273N airplanes, Model 

A321–111, –112, –131, –211, –212, 

–213, –231, –232, –251N, –252N, 

–253N, –271N, –272N, –251NX, 

–252NX, –253NX, –271NX, and –272NX 

airplanes, Model A330–201, –202, –203, 

–223, –243, –223F, –243F, –301, –302, 

–303, –321, –322, –323, –341, –342, 

–343, –743L, –841, and –941 airplanes, 

and Model A340–211, –212, –213, –311, 

–312, –313, –541, –542, –642, and –643 

airplanes. Model A300 F4–608ST, A300 

C4–620, A310–203C, A310–308, A320– 

215, A330–743L, A340–542, and A340– 

643 airplanes are not certificated by the 

FAA and are not included on the U.S. 

type certificate data sheet; this AD 

therefore does not include those 

airplanes in the applicability. The 

NPRM published in the Federal 

Register on March 22, 2024 (89 FR 

20360). The NPRM was prompted by 

AD 2023–0209, dated November 22, 

2023, issued by EASA, which is the 

Technical Agent for the Member States 

of the European Union (EASA AD 2023– 

0209). EASA AD 2023–0209 states 

occurrences were reported of chemical 

oxygen generators failing to activate in 

service and during maintenance 

activities. Subsequent investigations 

identified poor reactivity of the start 

powder used inside the oxygen 

generator. This condition, if not 

corrected, could lead to a reduction of 

the available oxygen capacity of the 

airplane, possibly resulting in injury to 

the airplane occupants. 

In the NPRM, the FAA proposed to 

require replacing affected oxygen 

generators, as specified in EASA AD 

2023–0209. The NPRM also proposed to 

prohibit the installation of affected 

parts. The FAA is issuing this AD to 

address the unsafe condition on these 

products. 

Actions Since the NPRM Was Issued 

Since the FAA issued the NPRM, 

EASA superseded EASA AD 2023–0209 


lotter on DSK11XQN23PROD with RULES1