Federal Register / Vol. 90, No. 22 / Tuesday, February 4, 2025 / Rules and Regulations 8891 

(1) ‘‘LEAP–1A engines’’ are CFM Model 

LEAP–1A23, LEAP–1A24, LEAP–1A24E1, 

LEAP–1A26, LEAP–1A26CJ, LEAP–1A26E1, 

LEAP–1A29, LEAP–1A29CJ, LEAP–1A30, 

LEAP–1A32, LEAP–1A33, LEAP–1A33B2, 

LEAP–1A35A engines. 

(2) ‘‘LEAP–1C engines’’ are CFM Model 

LEAP–1C28, LEAP–1C30, and LEAP–1C30B1 

engines. 

(3) A ‘‘part eligible for installation’’ is any 

HPT rotor interstage seal having a P/N and 

S/N that is not listed in Table 1 or Table 2 

of CFM SB LEAP–1A–72–00–0525–01A– 

930A–D Issue 002–00. 

(4) An ‘‘engine shop visit’’ is the induction 

of an engine into the shop for maintenance 

involving the separation of major mating 

engine flanges, except for the separation of 

engine flanges solely for the purposes of 

transportation without subsequent engine 

maintenance. 

(5) A ‘‘piece-part exposure’’ is when the 

HPT rotor interstage seal is separated from 

the HPT rotor assembly. 

(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 local Flight Standards District Office, as 

appropriate. If sending information directly 

to the manager of AIR–520 Continued 

Operational Safety Branch, send it to the 

attention of the person identified in 

paragraph (k) of this AD and email to: 

AMOC@faa.gov. 

(2) Before using any approved AMOC, 

notify your appropriate principal inspector, 

or lacking a principal inspector, the manager 

of the local flight standards district office/ 

certificate holding district office. 

(k) Additional Information 

For more information about this AD, 

contact Mehdi Lamnyi, Aviation Safety 

Engineer, FAA, 2200 South 216th Street, Des 

Moines, WA 98198; phone: (781) 238–7743; 

email: mehdi.lamnyi@faa.gov. 

(l) 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) CFM Service Bulletin LEAP–1A–72–00– 

0525–01A–930A–D, Issue 002–00, dated June 

28, 2024. 

(ii) CFM Service Bulletin LEAP–1C–72– 

00–0124–01A–930A–D, Issue 001–00, dated 

September 5, 2024. 

(3) For CFM material identified in this AD, 

contact CFM, GE Aviation Fleet Support, 1 

Neumann Way, M/D Room 285, Cincinnati, 

OH 45215; phone: (877) 432–3272; email: 

aviation.fleetsupport@ge.com. 

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

Airworthiness Products Section, Operational 

Safety Branch, 1200 District Avenue, 

Burlington, MA 01803. For information on 

the availability of this material at the FAA, 

call (817) 222–5110. 

(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 30, 2025. 

Suzanne Masterson, 

Deputy Director, Integrated Certificate 

Management Division, Aircraft Certification 

Service. 

[FR Doc. 2025–02204 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–2024–2141; Project 

Identifier MCAI–2024–00421–T; Amendment 

39–22931; AD 2025–01–07] 

RIN 2120–AA64 

Airworthiness Directives; Airbus SAS 

Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: The FAA is superseding 

Airworthiness Directive (AD) 2022–11– 

01, which applied to certain Airbus SAS 

Model A300 series airplanes; Model 

A300 B4–600, B4–600R, and F4–600R 

series airplanes; and Model A300 C4– 

605R Variant F airplanes (collectively 

called Model A300–600 series 

airplanes). AD 2022–11–01 required a 

detailed inspection (DET) of the main 

landing gear (MLG) support rib 5 lower 

flange, a fluorescent penetrant 

inspection (FPI) around the spot facing 

of certain fastener holes if necessary, 

and applicable corrective actions. This 

AD was prompted by the determination 

that additional airplanes are affected by 

the unsafe condition. This AD continues 

to require the actions in AD 2022–11– 

01 and adds airplanes to the 

applicability, 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–2024–2141; 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–2024–2141. 

FOR FURTHER INFORMATION CONTACT: Dan 

Rodina, Aviation Safety Engineer, FAA, 

1600 Stewart Avenue, Suite 410, 

Westbury, NY 11590; phone: 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 to supersede AD 2022–11–01, 

Amendment 39–22051 (87 FR 32292, 

May 31, 2022) (AD 2022–11–01). AD 

2022–11–01 applied to certain Airbus 

SAS Model A300 and A300–600 series 

airplanes. AD 2022–11–01 required a 

one-time DET of the MLG support rib 5 

lower flange, inboard and outboard of 

rib 5, on the right-hand and left-hand 

sides (i.e., affected area); a one-time FPI 

around the spot facing of certain 

fastener holes if necessary; and 

applicable corrective actions. The FAA 

issued AD 2022–11–01 to address 

cracking in the affected area that, if not 

detected and corrected, could affect the 

structural integrity of the airplane. 

The NPRM published in the Federal 

Register on September 16, 2024 (89 FR 

75507). The NPRM was prompted by 

AD 2024–0145, dated July 23, 2024, 

issued by EASA, which is the Technical 

Agent for the Member States of the 

European Union (EASA AD 2024–0145) 

(also referred to as the MCAI). The 

MCAI states certain airplanes were 

excluded from the applicability of 

EASA AD 2021–0190, dated August 17, 

2021 (corresponds to AD 2022–11–01) 


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8892 Federal Register / Vol. 90, No. 22 / Tuesday, February 4, 2025 / Rules and Regulations 

on the assumption they were withdrawn 

from service. At least one of those 

airplanes later returned to service and 

there is no evidence the other airplanes 

were scrapped or dismantled so the 

possibility exists they could also return 

to service. For these reasons, the 

applicability was expanded to include 

those airplanes. 

Also, since the FAA issued AD 2022– 

11–01, FAA Type Certificate A35EU 

was updated to remove Airbus SAS 

Model A300 B2–1A, B2–1C, B2K–3C, 

and B2–203 airplanes. The FAA 

therefore has removed those airplanes 

from the applicability of this AD. 

In the NPRM, the FAA proposed to 

continue to require the actions in AD 

2022–11–01 and add airplanes to the 

applicability, as specified in EASA AD 

2024–0145. The FAA is issuing this AD 

to address the unsafe condition on these 

products. 

You may examine the MCAI in the 

AD docket at regulations.gov under 

Docket No. FAA–2024–2141. 

Discussion of Final Airworthiness 

Directive 

Comments 

The FAA received comments from 

two commenters, The Air Line Pilots 

Association, International (ALPA) and 

FedEx Express, who supported the 

NPRM without change. 

Change Made to This AD 

The unsafe condition in paragraph (e) 

of this AD has been revised to include 

the action that prompted this AD. 

Conclusion 

This product has been approved by 

the aviation authority of another 

country and is approved for operation in 

the United States. Pursuant to the FAA’s 

bilateral agreement with this State of 

Design Authority, it has notified the 

FAA of the unsafe condition described 

in the MCAI referenced above. The FAA 

reviewed the relevant data, considered 

the 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 this product. 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 

EASA AD 2024–0145 specifies 

procedures for a one-time DET of the 

affected area, a one-time FPI around the 

spot facing of certain fastener holes in 

the affected area if no crack is detected 

during the DET, and obtaining and 

following approved repair instructions 

if any crack is found during the DET or 

FPI. EASA AD 2024–0145 also updated 

the applicability of affected airplanes. 

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 124 airplanes of U.S. registry. 

The FAA estimates the following costs 

to comply with this AD: 

ESTIMATED COSTS FOR REQUIRED ACTIONS

Labor cost Parts cost Cost per 

product 

Cost on U.S. 

operators 

23 work-hours × $85 per hour = $1,955 ..................................................................................... $0 $1,955 $242,420 

The FAA estimates the following 

costs to replace any cracked rib that are 

required, based on the results of any 

required actions and repair status. The 

FAA has no way of determining the 

number of aircraft that might need this 

on-condition action: 

ESTIMATED COSTS OF ON-CONDITION ACTIONS

Labor cost Parts cost Cost per product 

Up to 1,500 work-hours × $85 per hour = $127,500 ................................................... $620,000 Up to $747,500. 

The FAA has received no definitive 

data on which to base the cost estimates 

for the repair 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, 


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Federal Register / Vol. 90, No. 22 / Tuesday, February 4, 2025 / Rules and Regulations 8893 

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) 2022–11–01, Amendment 39– 

22051 (87 FR 32292, May 31, 2022); and 

■ b. Adding the following new AD: 

2025–01–07 Airbus SAS: Amendment 39– 

22931; Docket No. FAA–2024–2141; 

Project Identifier MCAI–2024–00421–T. 

(a) Effective Date 

This airworthiness directive (AD) is 

effective March 11, 2025. 

(b) Affected ADs 

This AD replaces AD 2022–11–01, 

Amendment 39–22051 (87 FR 32292, May 31, 

2022). 

(c) Applicability 

This AD applies to Airbus SAS airplanes 

identified in paragraphs (c)(1) through (5) of 

this AD, certificated in any category, as 

identified in European Union Aviation Safety 

Agency (EASA) AD 2024–0145, dated July 

23, 2024 (EASA AD 2024–0145). 

(1) Model A300 B4–2C, B4–103, and B4– 

203 airplanes. 

(2) Model A300 B4–601, B4–603, B4–620, 

and B4–622 airplanes. 

(3) Model A300 B4–605R and B4–622R 

airplanes. 

(4) Model A300 C4–605R Variant F 

airplanes. 

(5) Model A300 F4–605R and F4–622R 

airplanes. 

(d) Subject 

Air Transport Association (ATA) of 

America Code 57, Wings. 

(e) Unsafe Condition 

This AD was prompted by reports of 

cracking in the main landing gear (MLG) 

support rib 5 lower flange, inboard and 

outboard of rib 5, on the right-hand and lefthand sides, and the determination that 

additional airplanes are affected by the 

unsafe condition. The FAA is issuing this AD 

to address cracking of the MLG support rib 

5 lower flange. This condition, if not detected 

and corrected, could affect the structural 

integrity of the airplane. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Requirements 

Except as specified in paragraph (h) of this 

AD: Comply with all required actions and 

compliance times specified in, and in 

accordance with, EASA AD 2024–0145. 

(h) Exceptions to EASA AD 2024–0145 

(1) Where EASA AD 2024–0145 refers to 

August 31, 2021 (the effective date of EASA 

AD 2021–0190), this AD requires using July 

5, 2022 (the effective date of AD 2022–11–01, 

Amendment 39–22051 (87 FR 32292, May 31, 

2022)). 

(2) Where EASA AD 2024–0145 refers to its 

effective date, this AD requires using the 

effective date of this AD. 

(3) Where paragraph (3) of EASA AD 2024– 

0145 specifies to ‘‘accomplish those 

instructions accordingly’’ if any crack is 

detected, for this AD if any crack is detected, 

the crack must be repaired before further 

flight using a method approved by the 

Manager, International Validation Branch, 

FAA; or EASA; or Airbus SAS’s EASA 

Design Organization Approval (DOA). If 

approved by the DOA, the approval must 

include the DOA-authorized signature. 

(4) This AD does not adopt the ‘‘Remarks’’ 

section of EASA AD 2024–0145. 

(i) Additional AD Provisions 

The following provisions also apply to this 

AD: 

(1) Alternative Methods of Compliance 

(AMOCs): The Manager, AIR–520, Continued 

Operational Safety Branch, FAA, has the 

authority to approve AMOCs for this AD, if 

requested using the procedures found in 14 

CFR 39.19. In accordance with 14 CFR 39.19, 

send your request to your principal inspector 

or responsible Flight Standards Office, as 

appropriate. If sending information directly 

to the manager of the Continued Operational 

Safety Branch, send it to the attention of the 

person identified in paragraph (j) of this AD 

and email to: AMOC@faa.gov. 

(i) Before using any approved AMOC, 

notify your appropriate principal inspector, 

or lacking a principal inspector, the manager 

of the responsible Flight Standards Office. 

(ii) Airbus Statement of Airworthiness 

Compliance (ASAC) 80955386/006/2021, 

Issue 1, dated August 25, 2021; and ASAC 

80955386/024/2022, Issue 1, dated February 

25, 2022, are approved as AMOCs for the 

corresponding provisions of this AD for the 

airplanes identified in those ASACs only. 

(2) Contacting the Manufacturer: For any 

requirement in this AD to obtain instructions 

from a manufacturer, the instructions must 

be accomplished using a method approved 

by the Manager, AIR–520, Continued 

Operational Safety Branch, FAA; or EASA; or 

Airbus SAS’s EASA DOA. If approved by the 

DOA, the approval must include the DOAauthorized signature. 

(3) Required for Compliance (RC): Except 

as required by paragraph (i)(2) of this AD, if 

any material referenced in EASA AD 2024– 

0145 contains paragraphs that are labeled as 

RC, the instructions in RC paragraphs, 

including subparagraphs under an RC 

paragraph, must be done to comply with this 

AD; any paragraphs, including subparagraphs 

under those paragraphs, that are not 

identified as RC are recommended. The 

instructions in paragraphs, including 

subparagraphs under those paragraphs, not 

identified 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 instructions identified 

as RC can be done and the airplane can be 

put back in an airworthy condition. Any 

substitutions or changes to instructions 

identified as RC require approval of an 

AMOC. 

(j) Additional Information 

For more information about this AD, 

contact Dan Rodina, Aviation Safety 

Engineer, FAA, 1600 Stewart Avenue, Suite 

410, Westbury, NY 11590; phone: 206–231– 

3225; email: Dan.Rodina@faa.gov. 

(k) Material Incorporated by Reference 

(1) The Director of the Federal Register 

approved the incorporation by reference 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. 

(i) European Union Aviation Safety Agency 

(EASA) AD 2024–0145, dated July 23, 2024. 

(ii) [Reserved] 

(3) For EASA material identified in this 

AD, contact EASA, Konrad-Adenauer-Ufer 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. 

(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. 2025–02145 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–2025–0018; Project 

Identifier MCAI–2024–00749–R; Amendment 

39–22952; AD 2025–03–04] 

RIN 2120–AA64 

Airworthiness Directives; Airbus 

Helicopters 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule; request for 

comments. 

SUMMARY: The FAA is adopting a new 

airworthiness directive (AD) for all 


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