6416 Federal Register / Vol. 89, No. 22 / Thursday, February 1, 2024 / Rules and Regulations 

contains steps that are labeled as Required 

for Compliance (RC), the provisions of 

paragraphs (i)(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. 

(j) Related Information 

For more information about this AD, 

contact Bill Ashforth, Aviation Safety 

Engineer, FAA, 2200 South 216th St., Des 

Moines, WA 98198; telephone 206–231– 

3520; email Bill.Ashforth@faa.gov. 

(k) Material Incorporated by Reference 

(1) The Director of the Federal Register 

approved the incorporation by reference 

(IBR) of the service information listed in this 

paragraph under 5 U.S.C. 552(a) and 1 CFR 

part 51. 

(2) You must use this service information 

as applicable to do the actions required by 

this AD, unless the AD specifies otherwise. 

(i) Boeing Alert Service Bulletin 737– 

53A1217, Revision 1, dated September 8, 

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 

myboeingfleet.com. 

(4) You may view this service information 

at the FAA, Airworthiness Products Section, 

Operational Safety Branch, 2200 South 216th 

St., Des Moines, WA. For information on the 

availability of this material at the FAA, call 

206–231–3195. 

(5) You may view this 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, 2024. 

Caitlin Locke, 

Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2024–01968 Filed 1–31–24; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2023–0429; Project 

Identifier AD–2022–00775–T; Amendment 

39–22658; AD 2024–01–07] 

RIN 2120–AA64 

Airworthiness Directives; The Boeing 

Company Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: The FAA is adopting a new 

airworthiness directive (AD) for all The 

Boeing Company Model 777 airplanes. 

This AD was prompted by an evaluation 

by the design approval holder (DAH) 

that found the force limiter assemblies 

for the lateral control mechanism are 

not breaking out within the maximum 

design force requirements. This AD 

requires replacing affected force limiter 

assemblies and prohibits the installation 

of affected parts. The FAA is issuing 

this AD to address the unsafe condition 

on these products. 

DATES: This AD is effective March 7, 

2024. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in this AD 

as of March 7, 2024. 

ADDRESSES: 

AD Docket: You may examine the AD 

docket at regulations.gov under Docket 

No. FAA–2023–0429; or in person at 

Docket Operations between 9 a.m. and 

5 p.m., Monday through Friday, except 

Federal holidays. The AD docket 

contains this final rule, any comments 

received, and other information. The 

address for Docket Operations is U.S. 

Department of Transportation, Docket 

Operations, M–30, West Building 

Ground Floor, Room W12–140, 1200 

New Jersey Avenue SE, Washington, DC 

20590. 

Material Incorporated by Reference: 

• For service information identified 

in this final rule, contact 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 

myboeingfleet.com. 

• You may view this service 

information at the FAA, Airworthiness 

Products Section, Operational Safety 

Branch, 2200 South 216th St., Des 

Moines, WA. For information on the 

availability of this material at the FAA, 

call 206–231–3195. It is also available at 

regulations.gov under Docket No. FAA– 

2023–0429. 

FOR FURTHER INFORMATION CONTACT: 

Anthony Caldejon, Aviation Safety 

Engineer, FAA, 2200 South 216th St., 

Des Moines, WA 98198; telephone 206– 

231–3534; email Anthony.V.Caldejon@

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 The Boeing Company Model 

777 airplanes. The NPRM published in 

the Federal Register on March 27, 2023 

(88 FR 18099). The NPRM was 

prompted by an evaluation by the DAH 

that found the force limiter assemblies 

for the lateral control mechanism are 

not breaking out within the maximum 

design force requirements. In the NPRM, 

the FAA proposed to require identifying 

and replacing affected force limiter 

assemblies, and to prohibit the 

installation of affected parts. 

The FAA is issuing this AD to address 

the force limiter assemblies not breaking 

out within the maximum design force 

requirements. The unsafe condition, 

combined with a lateral control system 

jam or restriction, could result in the 

loss of lateral control from the wheel 

and potentially affect continued safe 

flight and landing. 

Discussion of Final Airworthiness 

Directive 

Comments 

The FAA received comments from the 

Air Line Pilots Association, 

International, who supported the NPRM 

without change. 

The FAA received additional 

comments from Aerologic, All Nippon 

Airways, American Airlines, Boeing, 

China Airlines, FedEx, Omni Air 

International (Omni Air), Swiss 

International Air Lines (Swiss Air), 

Turkish Airlines, and United Airlines. 

The following presents those comments 

and the FAA’s response to each 

comment. 

Request To Revise Requirements for 

Certain Line Numbers 

Aerologic, All Nippon Airways, 

American Airlines, Boeing, Omni Air, 

United Airlines, and Swiss Air 

requested changes to the proposed AD 

to provide relief for airplane line 

numbers prior to 1531. Aerologic, 

Boeing, and American Airlines also 

requested changes to provide relief for 

airplane lines number after 1707. Boeing 

stated that the suspect affected force 

limiter assemblies were delivered only 


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on airplane line numbers 1531 through 

1707, and the risk of rotability on other 

line numbers is low. 

Boeing requested that a records 

inspection be added for airplane line 

numbers prior to 1531 to determine 

prior replacement of a force limiter 

assembly, and to require installation of 

a force limiter assembly P/N 

253W1263–3 only if any force limiter 

assembly P/N 253W1263–1 had been 

replaced. Boeing stated that if no prior 

replacement of a force limiter assembly 

has been recorded on an airplane before 

line number 1531, the risk of having an 

affected part installed is low. Boeing 

reported that no force limiter assembly 

P/N 253W1263–1 has been purchased 

since 2012 and contended that the use 

of force limiter assembly P/N 

253W1263–1 for rotable parts is 

extremely low. Boeing also noted that 

force limiter assemblies P/N 253W1263– 

3 are already installed on airplane line 

numbers 1708 and subsequent and 

cannot be replaced by force limiter 

assemblies P/N 253W1263–1 in 

accordance with the drawing 

interchangeability. 

Omni Air proposed alternative 

requirements for airplane line numbers 

prior to 1531: repetitive operational 

checks of the wheel jam breakout 

mechanism in accordance with MPD 

task 27–190–00, and replacement with a 

force limiter assembly P/N 253W1263– 

3 for a failed operational check or as 

terminating action. Omni Air also 

proposed a one-time operational check 

of the wheel jam breakout mechanism in 

accordance with the MPD task if there 

are no concerns about the force limiter 

assembly being replaced since the last 

check. Omni stated that Boeing found 

that force limiter assemblies P/N 

253W1263–1 delivered on airplane line 

numbers prior to 1531 were functioning 

properly. 

Aerologic interpreted the effectivity of 

the Requirements Bulletin to be based 

on production testing of the force 

limiter assembly break-out forces 

changing the amount of applied 

corrosion inhibiting compound (CIC) 

causing the unsafe condition. Therefore, 

Aerologic stated that Boeing should be 

able to identify affected force limiter 

assemblies P/N 253W1263–1 either by 

serial number or batch number and 

differentiate acceptable and unsafe 

parts. Therefore, Aerologic requested 

that the FAA issue a separate AD action 

to test the break-out forces of force 

limiter assemblies P/N 253W1263–1 on 

airplanes not identified in the Boeing 

Alert Requirements Bulletin 777– 

27A0124 RB, dated October 27, 2021. 

Aerologic proposed requiring a check of 

the serial number of the force limiter 

assembly on all Model 777 airplanes to 

determine which affected units should 

be replaced. Also, Aerologic proposed 

on-wing testing of the breakout force as 

an alternative to the proposed 

replacement of all force limiter 

assemblies P/N 253W1263–1 on all 

Model 777 airplanes because the actions 

would not be possible within the 

proposed compliance time of the NPRM. 

All Nippon Airways questioned 

whether the intent of the proposed AD 

is to eliminate all force limiter 

assemblies P/N 253W1263–1, since 

Boeing has determined that replacement 

is not necessary if that part passed the 

functional test on delivery. All Nippon 

Airways suggested that operators will be 

significantly affected under the 

unrealistic proposed compliance time of 

12 months and requested that the AD 

requirements be revised so that only the 

target units identified in Boeing Alert 

Requirements Bulletin 777–27A0124 

RB, dated October 27, 2021, are required 

to be replaced. 

American Airlines proposed creating 

two groups of airplanes: Group 1, for 

Model 777 airplanes with line numbers 

1531 through 1707 (the effectivity of 

Boeing Alert Requirements Bulletin 

777–27A0124 RB, dated October 27, 

2021), and Group 2, for Model 777 

airplanes not identified in the 

Requirements Bulletin. American 

Airlines stated that it has had zero 

replacements of P/N 253W1263–1 in 24 

years of service of its fleet, which are all 

prior to line number 1531. American 

Airlines also stated that the illustrated 

parts catalog (IPC) shows that P/N 

253W1263–1 is interchangeable oneway forward only with P/N 253W1263– 

3. American Airlines further 

recommended creating subgroups for 

Group 2. For subgroup 2a, airplanes for 

which it can conclusively be shown that 

the force limiter assembly P/N 

253W1263–1 has never been replaced, 

no further action would be required. 

And for subgroup 2b, airplanes for 

which it cannot be conclusively shown 

that the force limiter assembly P/N 

253W1263–1 was never replaced, the 

AD would require replacement with 

force limiter assembly P/N 253W1263– 

3. 

Swiss Air requested that the proposed 

AD allow a records review on airplanes 

prior to line number 1531 to determine 

whether an assembly with force limiter 

assembly P/N 253W1263–1 was 

installed. Swiss Air further requested 

that the proposed AD allow testing of 

force limiter assemblies with P/N 

253W1263–1 with unknown history to 

measure the break-out force and allow 

return to service if the force is within 

the drawing requirements. United 

Airlines also requested that testing 

verifying serviceability on airplanes 

with line numbers prior to 1531 be 

considered acceptable. 

The FAA partially agrees with the 

requests. The FAA agrees to exclude 

airplane line numbers prior to 1531 and 

after 1707 from the replacement 

requirement if any installed force 

limiter assembly P/N 253W1263–1 had 

not been previously replaced. Limiting 

the replacement requirement in this way 

was the original intent of the AD. The 

FAA disagrees, however, with 

Aerologic’s request to revise paragraph 

(c) of this AD to limit the AD 

requirements to airplanes having line 

numbers in the effectivity of Boeing 

Alert Requirements Bulletin 777– 

27A0124 RB, dated October 27, 2021. 

The NPRM, under ‘‘Differences Between 

This Proposed AD and the Service 

Information,’’ stated that the 

applicability of the AD differed from the 

effectivity of Boeing Alert Requirements 

Bulletin 777–27A0124 RB, dated 

October 27, 2021, because the affected 

parts are rotable parts, and the FAA has 

determined that these parts could later 

be installed on airplanes that were 

initially delivered with acceptable parts, 

thereby subjecting those airplanes to the 

unsafe condition. Although the IPC 

states that force limiter assembly P/N 

253W1263–3 cannot be replaced with P/ 

N 253W1263–1, it is possible for an 

operator to do so. Therefore, paragraph 

(i) of this AD, ‘‘Parts Installation 

Prohibition,’’ applies to all Model 777 

airplanes. 

The FAA disagrees to include testing 

as a method of verifying a functional 

force limiter assembly because the FAA 

has revised paragraph (g) of this AD so 

that it applies only to (1) airplanes 

identified in Boeing Alert Requirements 

Bulletin 777–27A0124 RB, dated 

October 27, 2021, and (2) airplanes not 

identified in Boeing Alert Requirements 

Bulletin 777–27A0124 RB, dated 

October 27, 2021, on which the force 

limiter assembly was replaced with P/N 

253W1263–1. This should alleviate the 

demand for replacement force limiter 

assemblies P/N 253W1263–3. The FAA 

further disagrees to create a separate AD 

for airplane line numbers prior to 1531 

because of the urgency of the unsafe 

condition and the delay that would be 

caused by additional rulemaking. The 

FAA has also determined that, in light 

of the changes to this AD, a separate AD 

is not necessary. 

Request To Extend Compliance Time 

Aerologic, All Nippon Airways, China 

Airlines, FedEx, Swiss Air, Turkish 

Airlines, and United Airlines expressed 

concern that long lead times (300 days, 


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per Boeing, as specified by FedEx, 

Turkish Airlines, and China Airlines) 

for the new force limiter assemblies P/ 

N 253W1263–3 would make it difficult 

to replace force limiter assemblies P/N 

253W1263–1 within 12 months. 

The FAA acknowledges that it could 

be difficult to replace all force limiter 

assemblies P/N 253W1263–1 within the 

12-month compliance period because of 

the long lead time of procurement and 

the large quantity of spares having P/N 

253W1263–3 necessary to be available 

to satisfy the global fleet. The FAA 

disagrees, however, to revise the 

compliance time because the 

replacement requirement is limited to 

force limiter assemblies P/N 253W1263– 

1 only on airplane line numbers 1531 

through 1707 and on airplanes on which 

the original force limiter assembly had 

been replaced. However, an operator 

unable to meet the compliance time 

required by this AD may request 

approval of an alternative method of 

compliance (AMOC) under the 

provisions of paragraph (j) of this AD, if 

sufficient data are submitted to 

substantiate that such an extension 

would provide an acceptable level of 

safety. The FAA has not changed this 

AD further. 

Request To Clarify Effect of Unsafe 

Condition 

Boeing requested that the proposed 

AD be revised to clarify the unsafe 

condition and its potential safety 

impact, which, Boeing asserted, could 

be inferred as a loss of lateral control 

during normal flight conditions. Boeing 

stated that the unsafe condition occurs 

only with an affected force limiter 

assembly and a jam/restriction of the 

lateral controls, when the pilot needs to 

override a lateral control restriction. 

Boeing therefore requested that the 

Background section of the NPRM be 

revised to state that if a jam/restriction 

occurs on one side of the lateral controls 

on an airplane with an affected force 

limiter assembly, the pilot may not be 

able to override the jam preventing 

lateral control from the wheel. Boeing 

further requested that the proposed AD 

be revised to clarify that the unsafe 

condition could result in the loss of 

lateral control from the wheel and 

potentially affect continued safe flight 

and landing only when combined with 

a lateral control system restriction. 

The FAA concurs with the request 

and has revised relevant sections of this 

AD accordingly. 

Request To Define ‘‘Installation’’ of 

Parts 

American Airlines requested that the 

proposed AD be clarified to state that 

removal of a force limiter assembly P/ 

N 253W1263–1 for other maintenance 

and reinstallation of that same part on 

the same airplane will not be considered 

as an installation as defined in 

paragraph (i) of the proposed AD, ‘‘Parts 

Installation Prohibition.’’ 

The FAA infers that this additional 

clarification is requested to prevent the 

unnecessary removal and replacement 

of force limiter assemblies P/N 

253W1263–1 that have been previously 

verified as being outside the suspect 

affected range and considered 

functional. The FAA acknowledges the 

commenter’s concern, and provides the 

following clarification of the 

requirement. Once the FAA has 

determined that an unsafe condition 

exists, the FAA generally ensures that 

that condition not be allowed to be 

introduced into the fleet. Although the 

word ‘‘install’’ is generally considered 

to be broader than the word ‘‘replace,’’ 

operators can interpret ‘‘install’’ in this 

AD as meaning ‘‘replace’’ while 

remaining within the intent of 

paragraph (i) of this AD. By simply 

reinstalling a part removed during 

maintenance, the operator is not 

‘‘installing’’ a different part. Therefore, 

this AD allows operators to remove a 

part and then re-install that same part 

for other maintenance activities not 

associated with this AD. The FAA has 

not changed this AD as a result of this 

comment. 

Conclusion 

The FAA reviewed the relevant data, 

considered any comments received, and 

determined that air safety requires 

adopting this AD as proposed. 

Accordingly, the FAA is issuing this AD 

to address the unsafe condition on these 

products. Except for minor editorial 

changes, and any other changes 

described previously, this AD is 

adopted as proposed in the NPRM. 

None of the changes will increase the 

economic burden on any operator. 

Related Service Information Under 1 

CFR Part 51 

The FAA reviewed Boeing Alert 

Requirements Bulletin 777–27A0124 

RB, dated October 27, 2021. This service 

information specifies procedures for 

replacing the lower and upper force 

limiter assemblies P/N 253W1263–1 

with force limiter assemblies P/N 

253W1263–3. This service information 

is reasonably available because the 

interested parties have access to it 

through their normal course of business 

or by the means identified in 

ADDRESSES. 

Costs of Compliance 

The FAA estimates that this AD 

affects 353 airplanes of U.S. registry. 

The FAA estimates the following costs 

to comply with this AD: 

ESTIMATED COSTS

Action Labor cost Parts cost Cost per 

product 

Cost on U.S. 

operators 

Replacement ........................ 7 work-hours × $85 per hour = $595 ................................ $8,960 $9,555 Up to $3,372,915. 

The FAA has included all known 

costs in its cost estimate. According to 

the manufacturer, however, some or all 

of the costs of this AD may be covered 

under warranty, thereby reducing the 

cost impact on affected operators. 

Authority for This Rulemaking 

Title 49 of the United States Code 

specifies the FAA’s authority to issue 

rules on aviation safety. Subtitle I, 

section 106, describes the authority of 

the FAA Administrator. Subtitle VII: 

Aviation Programs, describes in more 

detail the scope of the Agency’s 

authority. 

The FAA is issuing this rulemaking 

under the authority described in 

Subtitle VII, Part A, Subpart III, Section 

44701: General requirements. Under 

that section, Congress charges the FAA 

with promoting safe flight of civil 

aircraft in air commerce by prescribing 

regulations for practices, methods, and 

procedures the Administrator finds 

necessary for safety in air commerce. 

This regulation is within the scope of 

that authority because it addresses an 

unsafe condition that is likely to exist or 

develop on products identified in this 

rulemaking action. 

Regulatory Findings 

This AD will not have federalism 

implications under Executive Order 

13132. This AD will not have a 


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Federal Register / Vol. 89, No. 22 / Thursday, February 1, 2024 / Rules and Regulations 6419 

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 adding 

the following new airworthiness 

directive: 

2024–01–07 The Boeing Company: 

Amendment 39–22658; Docket No. 

FAA–2023–0429; Project Identifier AD– 

2022–00775–T. 

(a) Effective Date 

This airworthiness directive (AD) is 

effective March 7, 2024. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to all The Boeing 

Company Model 777–200, –200LR, –300, 

–300ER, and 777F series airplanes, 

certificated in any category. 

(d) Subject 

Air Transport Association (ATA) of 

America Code 27, Flight controls. 

(e) Unsafe Condition 

This AD was prompted by an evaluation by 

the design approval holder that the force 

limiter assemblies for the lateral control 

mechanism are not breaking out within the 

maximum design force requirements. The 

FAA is issuing this AD to address the force 

limiter assemblies not breaking out within 

the maximum design force requirements. The 

unsafe condition, combined with a lateral 

control system jam or restriction, could result 

in the loss of lateral control from the wheel 

and potentially affect continued safe flight 

and landing. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Required Actions 

For airplanes identified in paragraphs 

(g)(1) and (2) of this AD: Except as specified 

by paragraph (h) of this AD, at the applicable 

times specified in the ‘‘Compliance’’ 

paragraph of Boeing Alert Requirements 

Bulletin 777–27A0124 RB, dated October 27, 

2021, do all applicable actions identified in, 

and in accordance with, the Accomplishment 

Instructions of Boeing Alert Requirements 

Bulletin 777–27A0124 RB, dated October 27, 

2021. 

(1) Airplanes identified in Boeing Alert 

Requirements Bulletin 777–27A0124 RB, 

dated October 27, 2021. 

(2) Airplanes not identified in Boeing Alert 

Requirements Bulletin 777–27A0124 RB, 

dated October 27, 2021, that have an original 

airworthiness certificate or original export 

certificate of airworthiness issued on or 

before the effective date of this AD, and on 

which a force limiter assembly P/N 

253W1263–1 or P/N 253W1263–3 installed 

in production has been replaced with P/N 

253W1263–1. 

Note 1 to paragraph (g): Guidance for 

accomplishing the actions required by this 

AD can be found in Boeing Alert Service 

Bulletin 777–27A0124 RB, dated October 27, 

2021, which is referred to in Boeing Alert 

Requirements Bulletin 77–27A0124 RB, 

dated October 27, 2021. 

(h) Exceptions to Service Information 

Specifications 

Where the Compliance Time columns of 

the tables in the ‘‘Compliance’’ paragraph of 

Boeing Alert Requirements Bulletin 777– 

27A0124 RB, dated October 27, 2021, use the 

phrase ‘‘the original issue date of 

Requirements Bulletin 777–27A0124 RB,’’ 

this AD requires using ‘‘the effective date of 

this AD.’’ 

(i) Parts Installation Prohibition 

As of the effective date of this AD, no 

person may install a force limiter assembly, 

P/N 253W1263–1, on any airplane. 

(j) 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 (k) of this AD. 

Information may be emailed to: 9- 

ANMSeattle-ACO-AMOC-Requests@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. 

(k) Related Information 

For more information about this AD, 

contact Anthony Caldejon, Aviation Safety 

Engineer, FAA, 2200 South 216th St., Des 

Moines, WA 98198; telephone 206–231– 

3534; email Anthony.V.Caldejon@faa.gov. 

(l) Material Incorporated by Reference 

(1) The Director of the Federal Register 

approved the incorporation by reference 

(IBR) of the service information listed in this 

paragraph under 5 U.S.C. 552(a) and 1 CFR 

part 51. 

(2) You must use this service information 

as applicable to do the actions required by 

this AD, unless the AD specifies otherwise. 

(i) Boeing Alert Requirements Bulletin 

777–27A0124 RB, dated October 27, 2021. 

(ii) [Reserved] 

(3) For service information identified in 

this AD, contact Boeing Commercial 

Airplanes, Attention: Contractual & Data 

Services (C&DS), 2600 Westminster Blvd., 

MC 110–SK57, Seal Beach, CA 90740–5600; 

telephone 562–797–1717; website 

myboeingfleet.com. 

(4) You may view this service information 

at the FAA, Airworthiness Products Section, 

Operational Safety Branch, 2200 South 216th 

St., Des Moines, WA. For information on the 

availability of this material at the FAA, call 

206–231–3195. 

(5) You may view this 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-locationsoremailfr.inspection@nara.gov. 

Issued on January 6, 2024. 

Caitlin Locke, 

Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2024–01970 Filed 1–31–24; 8:45 am] 

BILLING CODE 4910–13–P 


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