2025-11-09: Fire Protection

1. The authority citation for part 39 continues to read as follows: Authority: 49 U.S.C. 106(g), 40113, 44701. 2. The FAA amends § 39.13 by adding the following new airworthiness directive: 2025-11-09 Textron Aviation, Inc. (Type Certificate Previously Held by Cessna Aircraft Company): Amendment 39-23055; Docket No. FAA-2025-0334; Project Identifier AD-2024-00108-T. (a) Effective Date This airworthiness directive (AD) is effective July 11, 2025. (b) Affected ADs None. (c) Applicability This AD applies to Textron Aviation, Inc. (Type Certificate previously held by Cessna Aircraft Company) airplanes, certificated in any category, as specified in paragraphs (c)(1) and (2) of this AD. (1) Model 560 airplanes, having serial numbers (S/Ns) 560-0001 through 560-0707 inclusive, and 560-0751 through 560-0815 inclusive. (2) Model 560XL airplanes, having S/Ns 560-5001 through 560-5372 inclusive, 560- 5501 through 560-5677 inclusive, 560-5679 through 560-5830 inclusive, 560-6001 through 560-6294 inclusive, and 560-6296 through 560-6360 inclusive. (d) Subject Air Transport Association (ATA) of America Code 26; Fire Protection. (e) Unsafe Condition This AD was prompted by reports of mis-wired fire extinguishing bottles. The FAA is issuing this AD to address mis-wired fire extinguishing bottles, which might not activate in the event of an engine or auxiliary power unit (APU) fire. The unsafe condition, if not addressed, could result in an unextinguished fire in the engine nacelle or APU. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Fire Bottle Wire Test and Inspection For all airplanes except for serial numbers 560-6307 through 560-6360 inclusive: Within 100 flight hours or 60 days after the effective date of this AD, whichever occurs first, do the actions specified in paragraph (g)(1) and (2) of this AD. (1) Perform an engine fire extinguisher system functional test in accordance with step 4. of the Accomplishment Instructions of Textron Aviation Citation Service Letter SL560-26-02, Revision 1, dated July 31, 2024, or Textron Aviation Citation Service Letter SL560XL-26-02, Revision 1, dated July 31, 2024, as applicable. (2) Perform an inspection of the fire extinguisher bottle cartridge wire numbers and yellow ID sleeves for proper identification and legibility in accordance with step 6. of the Accomplishment Instructions of Textron Aviation Citation Service Letter SL560-26-02, Revision 1, dated July 31, 2024; or Textron Aviation Citation Service Letter SL560XL-26-02, Revision 1, dated July 31, 2024; as applicable. If the proper identification is not found or any yellow ID sleeve is not legible, within 100 flight hours or 60 days after the effective date of this AD, whichever occurs first do all applicable corrective actions, in accordance with step 6. of the Accomplishment Instructions of Textron Aviation Citation Service Letter SL560-26-02, Revision 1, dated July 31, 2024; or Textron Aviation Citation Service Letter SL560XL-26-02, Revision 1, dated July 31, 2024; as applicable. (h) No Report Although Textron Aviation Citation Service Letter SL560-26-02, Revision 1, dated July 31, 2024; and Textron Aviation Citation Service Letter SL560XL-26-02, Revision 1, dated July 31, 2024, specify to report inspection findings, this AD does not require any report. (i) Inspection Program Revision No later than 24 months after accomplishing paragraph (g) of this AD, do the revision specified in paragraph (i)(1) or (2) of this AD, as applicable. (1) For Model 560 airplanes, revise the existing inspection program to include the information identified in table 1 to paragraph (i)(1) of this AD. The initial compliance time for the task is at the later of the times specified in paragraphs (i)(1)(i) and (ii) of this AD. (i) Within 100 flight hours or 60 days after the effective date of this AD, whichever occurs first. (ii) Within 24 months after accomplishing paragraph (g) of this AD. Table 1 to Paragraph ( i )(1)-New Model 560 Airworthiness Limitation Task Task No. Task description Task interval Maintenance manual chapter 26-21-00-220 Fire Extinguisher Wiring Detailed Inspection 24 months 4-10-00 (2) For Model 560XL airplanes, revise the existing inspection program to include the information identified in table 2 to paragraph (i)(2) of this AD. The initial compliance time for the tasks is at the later of the times specified in paragraphs (i)(2)(i) and (ii) of this AD. (i) Within 100 flight hours or 60 days after the effective date of this AD, whichever occurs first. (ii) Within 24 months after accomplishing paragraph (g) of this AD. Table 2 to Paragraph ( i )(2)-New Model 560XL Airworthiness Limitations Tasks Task No. Task description Task interval Maintenance manual chapter 26-21-00-2200 Engine Fire Extinguisher Wiring Detailed Inspection 24 months 4-10-01 26-23-00-2200 Auxiliary Power Unit Fire Extinguisher Wiring Detailed Inspection 24 months 4-10-01 (j) No Alternative Actions or Intervals After the existing inspection program has been revised as required by paragraph (i) of this AD, no alternative actions ( e.g., inspections) or intervals, may be used unless the actions and intervals are approved as an alternative method of compliance (AMOC) in accordance with the procedures specified in paragraph (k) of this AD. (k) Alternative Methods of Compliance (AMOCs) (1) The Manager, Central Certification Branch, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. In accordance with 14 CFR 39.19, send your request to your principal inspector or responsible Flight Standards Office, as appropriate. If sending information directly to the manager of the certification office, send it to the attention of the person identified in paragraph (l) of this AD. Information may be emailed to: AMOC@faa.gov. (2) Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the responsible Flight Standards Office. (l) Related Information For more information about this AD, contact Kuri DeLuna, Aviation Safety Engineer, FAA, 1801 S Airport Road, Wichita, KS 67209; phone: 817-222-5350; email: wichita-cos@faa.gov. (m) 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 the AD specifies otherwise. (i) Textron Aviation Citation Service Letter SL560-26-02, Revision 1, dated July 31, 2024. (ii) Textron Aviation Citation Service Letter SL560XL-26-02, Revision 1, dated July 31, 2024. (3) For Textron Aviation material identified in this AD, contact Textron Aviation, Inc., P.O. Box 7706, Wichita, KS 67277; telephone 316-517-6215; fax 316-517-5802; email citationpubs@txtav.com; website support.cessna.com/custsupt/csupport/newlogin.jsp. (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 May 29, 2025. Steven W. Thompson, Acting Deputy Director, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2025-10320 Filed 6-5-25; 8:45 am]BILLING CODE 4910-13-P