AD 2025-20-08

53197 Federal Register / Vol. 90, No. 225 / Tuesday, November 25, 2025 / Rules and Regulations airplanes equipped with sharklets. The FAA is issuing this AD to address cracking in the lower wing cover material. The unsafe condition, if not addressed, could reduce the structural integrity of the outer wing. (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 2024–0201R1, dated December 2, 2024 (EASA AD 2024– 0201R1). (h) Exceptions to EASA AD 2024–0201R1 (1) Where EASA AD 2024–0201R1 refers to its effective date, this AD requires using the effective date of this AD. (2) Where EASA AD 2024–0201R1 refers to ‘‘04 November 2024 [the effective date of the original issue of this AD],’’ this AD requires using the effective date of this AD. (3) This AD does not adopt the ‘‘Remarks’’ section of EASA AD 2024–0201R1. (4) Where paragraph (3) of EASA AD 2024– 0201R1 specifies if ‘‘discrepancies are detected, as identified in the AOT, before next flight, contact Airbus for approved repair instructions and, within the compliance time(s) specified therein, accomplish those instructions accordingly’’, this AD requires replacing that text with ‘‘any discrepancy is detected, as identified in the AOT, the discrepancy must be repaired before further flight using a method approved by the Manager, AIR–520, Continued Operational Safety 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’’. (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 . 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, 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 DOA- authorized signature. (3) Required for Compliance (RC): Except as required by paragraph (i)(2) of this AD, if any material referenced in EASA AD 2024– 0201R1 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 Tim Dowling, Aviation Safety Engineer, FAA, 2200 South 216th St., Des Moines, WA 98198; phone: 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 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 2024–0201R1, dated December 2, 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. 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 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 September 24, 2025. Lona C. Saccomando, Acting Deputy Director, Integrated Certificate Management Division, Aircraft Certification Service. [FR Doc. 2025–20925 Filed 11–24–25; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2025–0215; Project Identifier MCAI–2024–00347–T; Amendment 39–23161; AD 2025–20–08] RIN 2120–AA64 Airworthiness Directives; Airbus Canada Limited Partnership (Type Certificate Previously Held by C Series Aircraft Limited Partnership (CSALP); Bombardier, Inc.) Airplanes AGENCY : Federal Aviation Administration (FAA), DOT. ACTION : Final rule. SUMMARY : The FAA is adopting a new airworthiness directive (AD) for all Airbus Canada Limited Partnership Model BD–500–1A10 and BD–500– 1A11 airplanes. This AD was prompted by events where the cargo bottle fail caution message was displayed. This AD requires replacing affected low rate discharge (LRD) bottles, inspecting extinguishing discharge lines and tubes, and replacing extinguishing discharge lines and tubes, as applicable, and also prohibits the installation of affected LRD bottles. The FAA is issuing this AD to address the unsafe condition on these products. DATES : This AD is effective December 30, 2025. The Director of the Federal Register approved the incorporation by reference of a certain publications listed in this AD as of December 30, 2025. ADDRESSES : AD Docket: You may examine the AD docket at regulations.gov under Docket No. FAA–2025–0215; 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 Transport Canada material identified in this AD, contact Transport Canada, Transport Canada National Aircraft Certification, 159 Cleopatra Drive, Nepean, Ontario K1A 0N5, Canada; telephone 888–663–3639; email TC.AirworthinessDirectives- Consignesdenavigabilite.TC@tc.gc.ca. You may find this material on the VerDate Sep<11>2014 15:58 Nov 24, 2025 Jkt 268001 PO 00000 Frm 00003 Fmt 4700 Sfmt 4700 E:\FR\FM\25NOR1.SGM 25NOR1 khammond on DSK9W7S144PROD with RULES

53198 Federal Register / Vol. 90, No. 225 / Tuesday, November 25, 2025 / Rules and Regulations Transport Canada website at tc.canada.ca/en/aviation. • You may view this material at the FAA, Airworthiness Products Section, Operational Safety Branch, 2200 South 216th St., Des Moines, WA. For information on the availability of this material at the FAA, call 206–231–3195. It is also available at regulations.gov under Docket No. FAA–2025–0215. FOR FURTHER INFORMATION CONTACT : Fatin Saumik, Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; phone: 516–228– 7300; email: 9-avs-nyaco-cos@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 Canada Limited Partnership Model BD–500–1A10 and BD–500–1A11 airplanes. The NPRM was published in the Federal Register on March 3, 2025 (90 FR 11033). The NPRM was prompted by AD CF–2024– 23, dated June 18, 2024 (Transport Canada AD CF–2024–23) (also referred to as the MCAI), issued by Transport Canada, which is the aviation authority for Canada. The MCAI states there were events where the cargo bottle fail caution message was displayed during flight resulting in diversions. Investigations found the LRD bottle was depleted of extinguishing agent. Further investigation revealed the LRD bottle metering device could be loose allowing extinguishing agent to escape resulting in loss or degraded capability of the cargo extinguishing system. In the NPRM, the FAA proposed to require replacing affected LRD bottles, inspecting extinguishing discharge lines and tubes, and replacing extinguishing discharge lines and tubes, as applicable, and to prohibit the installation of affected LRD bottles, as specified in Transport Canada AD CF–2024–23. 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–2025–0215. 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 received one additional comment from Delta Air Lines. The following presents the comment received on the NPRM and the FAA’s response to each comment. Request for Exception Delta Air Lines requested an additional exception be added to the proposed AD to correct a typographical error from ‘‘LDR’’ to ‘‘LRD’’ in Transport Canada AD CF–2024–23, Part I, paragraph B. The FAA agrees with this request and added paragraph (h)(4) of this AD accordingly. Conclusion These products have been approved by the civil aviation authority of another country and are approved for operation in the United States. Pursuant to the FAA’s bilateral agreement with this State of Design Authority, that authority has notified the FAA of the unsafe condition described in the MCAI referenced above. 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 Transport Canada AD CF–2024–23 which specifies procedures for verifying aircraft technical records to determine if an affected part (any LRD bottle having part number 475086–1, 475124–1 or 475087– 1 with certain serial numbers, unless the LRD bottle is marked with an encircled ‘C’ on the LRD bottle label) is installed on the airplane, replacing affected LRD bottles, and replacing extinguishing discharge lines and tubes, as applicable. Transport Canada AD CF–2024–23 also prohibits the installation of affected parts. The detailed visual inspections of the discharge lines and tubes, in multiple compartments, include checking discharge heads and distribution tubes for signs of residue and corrosion. 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 this AD affects 74 airplanes of U.S. registry. The FAA estimates the following costs to comply with this AD: E STIMATED C OSTS FOR R EQUIRED A CTIONS Labor cost Parts cost Cost per product Cost on U.S. operators 16 work-hours × $85 per hour = $1,360 ..................................................................................... $0 $1,360 $100,640 E STIMATED C OSTS OF O N -C ONDITION A CTIONS Labor cost Parts cost Cost per product 10 work-hours × $85 per hour = $850 .................................... Up to $17,368 ........................................ Up to $18,218. 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 VerDate Sep<11>2014 15:58 Nov 24, 2025 Jkt 268001 PO 00000 Frm 00004 Fmt 4700 Sfmt 4700 E:\FR\FM\25NOR1.SGM 25NOR1 khammond on DSK9W7S144PROD with RULES

53199 Federal Register / Vol. 90, No. 225 / Tuesday, November 25, 2025 / Rules and Regulations 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: 2025–20–08 Airbus Canada Limited Partnership (Type Certificate Previously Held by C Series Aircraft Limited Partnership (CSALP); Bombardier, Inc.): Amendment 39–23161; Docket No. FAA–2025–0215; Project Identifier MCAI–2024–00347–T. (a) Effective Date This airworthiness directive (AD) is effective December 30, 2025. (b) Affected ADs None. (c) Applicability This AD applies to all Airbus Canada Limited Partnership (Type Certificate previously held by C Series Aircraft Limited Partnership (CSALP); Bombardier, Inc.) Model BD–500–1A10 and BD–500–1A11 airplanes, certificated in any category. (d) Subject Air Transport Association (ATA) of America Code 26, Fire protection. (e) Unsafe Condition This AD was prompted by events where the cargo bottle fail caution message was displayed due to the depletion of extinguishing agent from the low rate discharge bottle. The FAA is issuing this AD to address the unsafe condition, which if not addressed, could result in loss or degraded capability of the cargo extinguishing system. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Requirements Except as specified in paragraphs (h), (i) and (j) of this AD: Comply with all required actions and compliance times specified in, and in accordance with Transport Canada AD CF–2024–23, dated June 18, 2024 (Transport Canada AD CF–2024–23). (h) Exception to Transport Canada AD CF– 2024–23 (1) Where Transport Canada AD CF–2024– 23 refers to its effective date, this AD requires using the effective date of this AD. (2) Where the definition of ‘‘Affected Part’’ in Transport Canada AD CF–2024–23 specifies ‘‘a serial number listed in the Applicability Section of the ACLP SB,’’ this AD requires replacing that text with ‘‘a serial number listed in the Applicability Section of SB BD500–262010, Issue 001, dated 30 April 2024.’’ (3) Where the paragraph B. of Part 1 in Transport Canada AD CF–2024–23 specifies ‘‘in accordance with the procedure in Section 2 of the Accomplishment Instructions of the ACLP SB,’’ this AD requires replacing that text with ‘‘in accordance with the ‘‘Procedure’’ section of the Accomplishment Instructions of the ACLP SB.’’ (4) Where paragraph B. of Part 1 in Transport Canada AD CF–2024–23 specifies ‘‘the LDR bottles,’’ this AD requires replacing that text with ‘‘the LRD bottles.’’ (i) No Reporting Requirement Although the material referenced in Transport Canada AD CF–2024–23 specifies to submit certain information to the manufacturer, this AD does not include that requirement. (j) 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 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 . 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, AIR–520, Continued Operational Safety Branch, FAA; or Transport Canada; or Airbus Canada Limited Partnership’s Transport Canada Design Approval Organization (DAO). If approved by the DAO, the approval must include the DAO-authorized signature. (3) Required for Compliance (RC): Except as required by paragraphs (i) and (j)(2) of this AD, if any material contains procedures or tests that are identified as RC, those procedures and tests must be done to comply with this AD; any procedures or tests that are not identified as RC are recommended. Those procedures and tests that are 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 procedures and tests identified as RC can be done and the airplane can be put back in an airworthy condition. Any substitutions or changes to procedures or tests identified as RC require approval of an AMOC. (k) Additional Information For more information about this AD, contact Fatin Saumik, Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; phone: 516–228– 7300; email: 9-avs-nyaco-cos@faa.gov. (l) 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) Transport Canada AD CF–2024–23, dated June 18, 2024. (ii) [Reserved] (3) For Transport Canada material identified in this AD, contact Transport Canada, Transport Canada National Aircraft Certification, 159 Cleopatra Drive, Nepean, Ontario K1A 0N5, Canada; telephone 888– 663–3639; email TC.AirworthinessDirectives- Consignesdenavigabilite.TC@tc.gc.ca; website tc.canada.ca/en/aviation. (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 VerDate Sep<11>2014 15:58 Nov 24, 2025 Jkt 268001 PO 00000 Frm 00005 Fmt 4700 Sfmt 4700 E:\FR\FM\25NOR1.SGM 25NOR1 khammond on DSK9W7S144PROD with RULES

53200 Federal Register / Vol. 90, No. 225 / Tuesday, November 25, 2025 / Rules and Regulations the availability of this material at NARA, visit www.archives.gov/federal-register/cfr/ ibr-locations or email fr.inspection@nara.gov. Issued on September 26, 2025. Peter A. White, Deputy Director, Integrated Certificate Management Division, Aircraft Certification Service. [FR Doc. 2025–20921 Filed 11–24–25; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2025–0340; Project Identifier MCAI–2024–00462–T; Amendment 39–23158; AD 2025–20–05] 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) 2023–14– 09, which applied to certain Airbus SAS Model A350–941 and –1041 airplanes. AD 2023–14–09 required an inspection for missing or incorrectly applied sealant in the wing tanks, applicable corrective actions, and a modification to restore two independent layers of lightning strike protection. Since the FAA issued AD 2023–14–09, Airbus provided inspection instructions for a new inspection area of the upper and lower, front and rear spar corner fittings for certain airplanes. This AD continues to require the actions in AD 2023–14– 09, and requires a one-time detailed inspection (DET) for missing or incorrectly applied sealant of the front and rear spars for certain airplanes and applicable corrective actions. The FAA is issuing this AD to address the unsafe condition on these products. DATES : This AD is effective December 30, 2025. The Director of the Federal Register approved the incorporation by reference of certain publications listed in this AD as of December 30, 2025. ADDRESSES : AD Docket: You may examine the AD docket at regulations.gov under Docket No. FAA–2025–0340; 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 European Union Aviation Safety Agency (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. You may find this material on the EASA website at ad.easa.europa.eu. • For Airbus material identified in this AD, contact Airbus SAS, Airworthiness Office—EAL, Rond-Point Emile Dewoitine No: 2, 31700 Blagnac Cedex, France; telephone +33 5 61 93 36 96; fax +33 5 61 93 45 80; email continued-airworthiness.a350@ airbus.com; website airbus.com. • You may view this material at the FAA, Airworthiness Products Section, Operational Safety Branch, 2200 South 216th St., Des Moines, WA. For information on the availability of this material at the FAA, call 206–231–3195. It is also available at regulations.gov under Docket No. FAA–2025–0340. FOR FURTHER INFORMATION CONTACT : Promita Dey, Aviation Safety Engineer, FAA, 2200 South 216th St., Des Moines, WA 98198; telephone 316–946–4106; email promita.dey@faa.gov. SUPPLEMENTARY INFORMATION : Background The FAA issued a notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 to supersede AD 2023–14–09, Amendment 39–22509 (88 FR 51227, August 3, 2023) (AD 2023–14–09). AD 2023–14–09 applied to certain Airbus SAS Model A350–941 and –1041 airplanes. AD 2023–14–09 required an inspection for missing or incorrectly applied sealant in the wing tanks, applicable corrective actions, and a modification to restore the two independent layers of lightning strike protection. AD 2023–14–09 corresponds to EASA AD 2022–0250, dated December 14, 2022 (EASA AD 2022– 0250). The FAA issued AD 2023–14–09 to address missing or incorrect application of the lightning strike edge glow sealant protection at specific locations on the wing tanks. This sealant provides the second layer or protection to prevent stringer edge glow in case of lightning strike. The NPRM was published in the Federal Register on March 11, 2025 (90 FR 11683). The NPRM was prompted by AD 2024–0155, dated August 13, 2024, issued by EASA, which is the Technical Agent for the Member States of the European Union (EASA AD 2024–0155) (also referred to as the MCAI). The MCAI states that since EASA AD 2022– 0250 was issued, Airbus published inspection instructions for a new one- time DET for missing or incorrect application of the lightning strike edge glow sealant protection of the affected upper and lower front and rear spar corner fittings between Rib 1 and Rib 2 for certain airplanes ( i.e., an additional affected area not identified in EASA AD 2022–0250), and depending on findings, accomplishment of applicable corrective actions. Missing or incorrectly applied sealant, combined with a pre-existing undetected incorrect installation of an adjacent fastener, if not detected and corrected, could create an ignition source for the fuel vapor inside the tanks, which, in case of a lightning strike of high intensity in the immediate area, could possibly result in ignition of the fuel-air mixture in the affected fuel tank and consequent loss of the airplane. In the NPRM, the FAA proposed to continue to require the actions in AD 2023–14–09 and proposed to require a one-time DET for missing or incorrectly applied sealant of the front and rear spars for certain airplanes and applicable corrective actions, as specified in EASA AD 2024–0155. 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–2025–0340. Discussion of Final Airworthiness Directive Comments The FAA received comments from the Air Line Pilots Association, International, (ALPA) and ProTech Aero Services Limited (ProTech) who supported the NPRM without change. The FAA received an additional comment from Delta Air Lines (Delta). The following presents the comment received on the NPRM and the FAA’s response to the comment. Request for Continue Use of Previously Approved Alternative Methods of Compliance (AMOCs) Delta requested the FAA grant approval to continue using the previously approved AMOC AIR–731– 23–00454a, dated November 1, 2023. Delta stated that the FAA had approved the stated AMOC, allowing the omission of pipe tests if the pipes were not removed during access, for AD 2023– 14–09. Delta noted this proposed AD retains the requirements of AD 2023– 14–09. VerDate Sep<11>2014 15:58 Nov 24, 2025 Jkt 268001 PO 00000 Frm 00006 Fmt 4700 Sfmt 4700 E:\FR\FM\25NOR1.SGM 25NOR1 khammond on DSK9W7S144PROD with RULES