97480 Federal Register / Vol. 89, No. 236 / Monday, December 9, 2024 / Rules and Regulations 

(3) For Sabena Technics material identified 

in this AD, contact Sabena Technics BGC, Le 

Galile ́e, 9 Bd Henri Ziegler, 31700 Blagnac 

France; telephone 33 (0)1 56 54 42 30; email 

airworthiness.office@sabenatechnics.com. 

(4) 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. 

(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 November 21, 2024. 

Victor Wicklund, 

Deputy Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2024–28789 Filed 12–6–24; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2024–2025; Project 

Identifier MCAI–2024–00120–T; Amendment 

39–22888; AD 2024–23–09] 

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 A321–251NX, 

–252NX, –253NX, –271NX, and –272NX 

airplanes. This AD was prompted by the 

discovery during a quality review 

performed during manufacturing, that a 

torque strip indicator (material 

‘‘Dykem’’) had been applied on the 

orifice fitting on certain slides’ inflation 

reservoirs’ venting holes. This AD 

requires an inspection for discrepancies 

of affected parts (certain reservoirs 

having certain orifices) and replacement 

of discrepant affected parts, and 

prohibits installing 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 January 13, 

2025. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in this AD 

as of January 13, 2025. 

ADDRESSES: 

AD Docket: You may examine the AD 

docket at regulations.gov under Docket 

No. FAA–2024–2025; 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–2024–2025. 

FOR FURTHER INFORMATION CONTACT: 

Timothy Dowling, Aviation Safety 

Engineer, FAA, 1600 Stewart Avenue, 

Suite 410, Westbury, NY 11590; 

telephone 206–231–3667; email 

timothy.p.dowling@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 A321– 

251NX, –252NX, –253NX, –271NX, and 

–272NX airplanes. The NPRM 

published in the Federal Register on 

August 21, 2024 (89 FR 67575). The 

NPRM was prompted by AD 2024–0057, 

dated February 28, 2024, issued by 

EASA, which is the Technical Agent for 

the Member States of the European 

Union (EASA AD 2024–0057) (also 

referred to as the MCAI). The MCAI 

states that during a quality review 

performed during manufacturing, a 

quality escape was identified on the 

Model A321NX door 3 slide and offwing 

slide inflation reservoirs’ venting holes, 

where a torque strip indicator (material 

‘‘Dykem’’) had been applied on the 

orifice fitting (clogging the vent hole). 

This condition, in combination with a 

slide reservoir pressure loss, if not 

detected and corrected, could lead to 

deployment in flight of a non-inflated 

slide, possibly resulting in damage to, 

and reduced control of, the airplane. 

In the NPRM, the FAA proposed to 

require an inspection for discrepancies 

of affected parts (certain reservoirs 

having certain orifices) and replacement 

of discrepant affected parts, and 

prohibit installing affected parts, as 

specified in EASA AD 2024–0057. 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–2024–2025. 

Discussion of Final Airworthiness 

Directive 

Comments 

The FAA received comments from the 

Air Line Pilots Association, 

International (ALPA), and United 

Airlines, who supported the NPRM 

without change. 

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, 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 2024–0057 specifies a 

general visual inspection of affected 

parts (certain reservoirs having certain 

orifices) for discrepancies (the presence 

of ‘‘Dykem’’ material on the orifice 

fitting) and replacement of discrepant 

affected parts, and prohibits installing 

affected parts. 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 227 airplanes of U.S. registry. 

The FAA estimates the following costs 

to comply with this AD: 


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Federal Register / Vol. 89, No. 236 / Monday, December 9, 2024 / Rules and Regulations 97481 

ESTIMATED COSTS FOR REQUIRED ACTIONS

Labor cost Parts cost Cost per 

product 

Cost on U.S. 

operators 

1 work-hour × $85 per hour = $85 ...................................................................................... $0 $85 $19,295 

The FAA estimates the following 

costs to do any necessary on-condition 

action that would be required based on 

the results of any required actions. 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 

1 work-hour × $85 per hour = $85 ......................................................................... Negligible ............................................... $85 

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 

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: 

2024–23–09 Airbus SAS: Amendment 39– 

22888; Docket No. FAA–2024–2025; 

Project Identifier MCAI–2024–00120–T. 

(a) Effective Date 

This airworthiness directive (AD) is 

effective January 13, 2025. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to all Airbus SAS Model 

A321–251NX, –252NX, –253NX, –271NX, 

and –272NX 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 the discovery 

during a quality review performed during 

manufacturing, that a torque strip indicator 

(material ‘‘Dykem’’) had been applied on the 

orifice fitting on certain slides’ inflation 

reservoirs’ venting holes. The FAA is issuing 

this AD to address blocked venting holes on 

the orifice fitting on an escape slide’s 

inflation reservoir. The unsafe condition, if 

not addressed, could, in combination with a 

slide reservoir pressure loss, result in 

deployment in flight of a non-inflated slide, 

possibly resulting in damage to, and reduced 

control 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, European Union Aviation 

Safety Agency (EASA) AD 2024–0057, dated 

February 28, 2024 (EASA AD 2024–0057). 

(h) Exceptions to EASA AD 2024–0057 

(1) Where EASA AD 2024–0057 refers to 

March 13, 2024, or its effective date, this AD 

requires using the effective date of this AD. 

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

section of EASA AD 2024–0057. 

(i) Additional AD Provisions 

The following provisions also apply to this 

AD: 

(1) Alternative Methods of Compliance 

(AMOCs): The Manager, International 

Validation 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 International Validation 

Branch, mail it to the address identified in 

paragraph (j) of this AD. Information may be 

emailed to: AMOC@faa.gov. Before using any 

approved AMOC, notify your appropriate 

principal inspector, or lacking a principal 

inspector, the manager of the responsible 

Flight Standards Office. 

(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, International Validation 

Branch, FAA; or EASA; or Airbus SAS’s 


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97482 Federal Register / Vol. 89, No. 236 / Monday, December 9, 2024 / Rules and Regulations 

EASA Design Organization Approval (DOA). 

If approved by the DOA, the approval must 

include the DOA-authorized signature. 

(3) Required for Compliance (RC): Except 

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

any service information referenced in EASA 

AD 2024–0057 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 Timothy Dowling, Aviation Safety 

Engineer, FAA, 1600 Stewart Avenue, Suite 

410, Westbury, NY 11590; telephone 206– 

231–3667; email timothy.p.dowling@faa.gov. 

(k) 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. 

(i) European Union Aviation Safety Agency 

(EASA) AD 2024–0057, dated February 28, 

2024. 

(ii) [Reserved] 

(3) For EASA AD 2024–0057 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 EASA AD 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 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 November 18, 2024. 

Peter A. White, 

Deputy Director, Integrated Certificate 

Management Division, Aircraft Certification 

Service. 

[FR Doc. 2024–28779 Filed 12–6–24; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2024–1698; Project 

Identifier AD–2024–00005–T; Amendment 

39–22895; AD 2024–24–05] 

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 certain 

The Boeing Company Model 767–300F 

series airplanes. This AD was prompted 

by a determination that certain cargo 

compartment insulation blankets do not 

adequately fit some locations and allow 

smoke to migrate past the cargo 

compartment sidewall liners and 

upward into the main cabin. This AD 

requires replacing cargo compartment 

insulation blankets. The FAA is issuing 

this AD to address the unsafe condition 

on these products. 

DATES: This AD is effective January 13, 

2025. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in this AD 

as of January 13, 2025. 

ADDRESSES: 

AD Docket: You may examine the AD 

docket at regulations.gov under Docket 

No. FAA–2024–1698; 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 

Blvd., MC 110–SK57, Seal Beach, CA 

90740–5600; telephone 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–2024–1698. 

FOR FURTHER INFORMATION CONTACT: Julie 

Linn, Aviation Safety Engineer, FAA, 

2200 South 216th St., Des Moines, WA 

98198; phone: 206–231–3684; email: 

julie.linn@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 certain The Boeing Company 

Model 767–300F series airplanes. The 

NPRM published in the Federal 

Register on June 26, 2024 (89 FR 53370). 

The NPRM was prompted by a 

determination that certain cargo 

compartment insulation blankets do not 

adequately fit some locations and allow 

smoke to migrate past the cargo 

compartment sidewall liners and 

upward into the main cabin. In the 

NPRM, the FAA proposed to require 

replacing the cargo compartment 

insulation blankets. The FAA is issuing 

this AD to address inadequately fitting 

cargo compartment insulation blankets. 

The unsafe condition, if not addressed, 

could result in a fire in the bilge area of 

the cargo compartment, which if not 

contained could lead to a smoke and fire 

event in the passenger compartment. 

Discussion of Final Airworthiness 

Directive 

Comments 

The FAA received a comment from 

Air Line Pilots Association, 

International (ALPA) who supported the 

NPRM without change. 

The FAA also received comments 

from Boeing, Aviation Partners Boeing, 

and All Nippon Airways. The following 

presents the comments received on the 

NPRM and the FAA’s response to each 

comment. 

Request To Add a Boeing Alternative 

Method of Compliance (AMOC) Notice 

to the Proposed AD 

All Nippon Airways and Boeing 

requested that the FAA add Boeing 

AMOC Notice 767–25–0550 AMOC 01, 

dated March 13, 2024, to the proposed 

AD. All Nippon Airways requested that 

Boeing AMOC Notice 767–25–0550 

AMOC 01, dated March 13, 2024, be 

added to paragraph (g) of the proposed 

AD to specify that the actions should be 

done in accordance with both Boeing 

Special Attention Service Bulletin 767– 

25–0550 Revision 2, dated December 18, 

2023, and Boeing AMOC Notice 767– 

25–0550 AMOC 01, dated March 13, 

2024. All Nippon Airways stated that 

Boeing AMOC Notice 767–25–0550 

AMOC 01, dated March 13, 2024, 

provides changes regarding Boeing 


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