2026-01-07: Time Limits/Maintenance Checks

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: 2026-01-07 Bombardier, Inc.: Amendment 39-23235; Docket No. FAA-2025-0751; Project Identifier MCAI-2024-00305-T. (a) Effective Date This airworthiness directive (AD) is effective February 20, 2026. (b) Affected ADs None. (c) Applicability This AD applies to all Bombardier, Inc., Model BD-100-1A10 airplanes, certificated in any category. (d) Subject Air Transport Association (ATA) of America Code 05, Time Limits/Maintenance Checks. (e) Unsafe Condition This AD was prompted by a determination that new or more restrictive airworthiness limitations are necessary. The FAA is issuing this AD to address potential structural, control system, and navigational system failures. The unsafe condition, if not addressed, could result in loss of control of the airplane. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Maintenance or Inspection Program Revision Within 90 days after the effective date of this AD, revise the existing maintenance or inspection program, as applicable, to incorporate the information specified in Part 2, "Airworthiness Limitations," of the applicable time limits/maintenance checks (TLMC) manual identified in paragraph (g)(1) or (2) of this AD. The initial compliance time for doing the tasks specified in Part 2, "Airworthiness Limitations," of the applicable TLMC manual identified in paragraph (g)(1) or (2) of this AD is at the time specified in the applicable TLMC manual, or within 90 days after the effective date of this AD, whichever occurs later. Using a later revision of Part 2, "Airworthiness Limitations," of the applicable TLMC manual with information identical to the material listed in paragraph (g)(1) or (2) of this AD, as applicable, is acceptable for compliance with the requirements of this paragraph. (1) For Model BD-100-1A10 airplanes having serial numbers (S/Ns) 20003 through 20457 inclusive: Bombardier Challenger 300 TLMC, Publication No. CH 300 TLMC, Revision 24, dated August 9, 2023. (2) For Model BD-100-1A10 airplanes having S/Ns 20501 through 21399 inclusive: Bombardier Challenger 350 TLMC, Publication No. CH 350 TLMC, Revision 14, dated August 9, 2023. (h) No Alternative Actions or Intervals After the existing maintenance or inspection program has been revised as required by paragraph (g) of this AD, no alternative actions ( e.g., inspections) or intervals, may be used unless the actions or intervals are approved as an alternative method of compliance (AMOC) in accordance with the procedures specified in paragraph (i)(1) of this AD. (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, 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, International Validation Branch, FAA; or Transport Canada; or Bombardier, Inc.'s Transport Canada Design Approval Organization (DAO). If approved by the DAO, the approval must include the DAO-authorized signature. (j) Additional Information For more information about this AD, contact John Massey, Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; phone: 516-228-7300; email: 9-avs-nyaco-cos@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) Part 2, "Airworthiness Limitations," of Bombardier Challenger 300 Time Limits/Maintenance Check (TLMC), Publication No. CH 300 TLMC, Revision 24, dated August 9, 2023. (ii) Part 2, "Airworthiness Limitations," of Bombardier Challenger 350 TLMC, Publication No. CH 350 TLMC, Revision 14, dated August 9, 2023. (3) For Bombardier material identified in this AD, contact Bombardier Business Aircraft Customer Response Center, 400 Côte Vertu Road West, Dorval, Québec H4S 1Y9, Canada; telephone 514 855 2999; email ac.yul@aero.bombardier.com; website my.bombardier.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 January 13, 2026. Steven W. Thompson, Acting Deputy Director, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2026-00841 Filed 1-15-26; 8:45 am]BILLING CODE 4910-13-P