2026-14-09: 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: a. Removing Airworthiness Directive (AD) 2025-17-12, Amendment 39 23122 (90 FR 46330, September 26, 2025); and b. Adding the following new AD: 2026-14-09-Bombardier, Inc.: Amendment 39-23410; Docket No. FAA-2025-3435; Project Identifier MCAI-2025-01602-T. (a) Effective Date This airworthiness directive (AD) is effective August 18, 2026. (b) Affected ADs This AD replaces AD 2025-17-12, Amendment 39-23122 (90 FR 46330, September 26, 2025) (AD 2025-17-12). (c) Applicability This AD applies to Bombardier, Inc., airplanes identified in paragraphs (c)(1) through (3) of this AD, certificated in any category. (1) All Model CL-600-1A11 (600), CL-600-2A12 (601), and CL-600-2B16 (601-3A and 601-3R Variants) airplanes. (2) Model CL-600-2B16 (604 Variant) airplanes, serial numbers (S/Ns) 5301 through 5665 inclusive and S/Ns 5701 through 6049 inclusive. (3) Model CL-600-2B16 (604 Variant) airplanes, S/Ns 6050 through 6192 inclusive. (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 new or more restrictive limitations. Failure to comply with these new or more restrictive limitations could adversely affect the continued airworthiness of the airplane. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Retained Revision of the Existing Maintenance or Inspection Program for Certain Airplanes, With Removal of References to S/Ns 5301 Through 6049 Inclusive This paragraph restates the requirements of paragraph (g) of AD 2025-17-12, with removal of references to S/Ns 5301 through 6049 inclusive. For airplanes identified in paragraphs (c)(1) and (3) of this AD, comply with paragraphs (g)(1) and (2) of this AD. (1) Within 90 days after October 31, 2025 (the effective date of AD 2025-17-12), revise the existing maintenance or inspection program, as applicable, to incorporate the information specified in the applicable time limits/maintenance checks (TLMC) document identified in table 1 to paragraph (g)(1) of this AD. The initial compliance time for doing the tasks is at the time specified in the applicable TLMC document identified in table 1 to paragraph (g)(1) of this AD, or within 90 days after October 31, 2025, whichever occurs later. Table 1 to Paragraph ( g )(1)-TLMC Documents Applicable airplanes TLMC section or part TLMC document Bombardier, Inc., Model CL-600-1A11 (600) airplanes, serial numbers (S/Ns) 1004 through 1085 inclusive Section 5-10-00, "Airworthiness Limitations" Bombardier Challenger 600 TLMC, Publication No. PSP 605, Revision 39, January 8, 2018. 1 Bombardier, Inc., Model CL-600-2A12 (601) airplanes, S/Ns 3001 through 3066 inclusive Section 5-10-00, "Airworthiness Limitations" Bombardier Challenger 601 TLMC, Publication No. PSP 601-5, Revision 46, January 8, 2018. 2 Bombardier, Inc., Model CL-600-2B16 (601-3A Variant) airplanes, S/Ns 5001 through 5134 inclusive; and Model CL-600-2B16 (601-3R Variant) airplanes, S/Ns 5135 through 5194 inclusive Section 5-10-00, "Airworthiness Limitations" Bombardier Challenger 601 TLMC, Publication No. PSP 601A-5, Revision 42, January 8, 2018. 3 Bombardier, Inc., Model CL-600-2B16 (604 Variant) airplanes, S/Ns 6050 through 6180 inclusive Part 2, "Airworthiness Limitations" Bombardier Challenger 650 TLMC, Publication No. CH 650 TLMC, Revision 9, November 22, 2022. 1 For obtaining these sections of Bombardier Challenger 600 TLMC, Publication No. PSP 605, use Document Identification No. CH 600 TLMC. 2 For obtaining these sections of Bombardier Challenger 601 TLMC, Publication No. PSP 601-5, use Document Identification No. CH 601 TLMC. 3 For obtaining these sections of Bombardier Challenger 601 TLMC, Publication No. PSP 601A-5, use Document Identification No. CH 601 TLMC-1. (2) Within 90 days after October 31, 2025 (the effective date of AD 2025-17-12), revise the existing maintenance or inspection program, as applicable, to incorporate the information specified in the applicable temporary revisions (TRs) identified in table 2 to paragraph (g)(2) of this AD. The initial compliance time for doing the tasks is at the time specified in the applicable TR identified in table 2 to paragraph (g)(2) of this AD, or within 90 days after October 31, 2025, whichever occurs later. Table 2 to Paragraph ( g )(2)-Temporary Revisions Applicable airplanes TR Task number and title or life limit part number (P/N) and name Bombardier, Inc., Model CL-600-1A11 (600) airplanes, S/Ns 1004 through 1085 inclusive Bombardier Temporary Revision No. TR 5-164, dated December 23, 2022 53-10-01-102 *, Forward Pressure Bulkhead Cap Angle-Aft Side. Bombardier, Inc., Model CL-600-1A11 (600) airplanes, S/Ns 1004 through 1085 inclusive Bombardier Temporary Revision No. TR 5-165, dated October 25, 2023 B0201102-2-220, Rudder Pedal Potentiometer Coupling Setscrews. Bombardier, Inc., Model CL-600-2A12 (601) airplanes, S/Ns 3001 through 3066 inclusive Bombardier Temporary Revision No. TR 5-268, dated December 23, 2022 53-10-01-103 *, Forward Pressure Bulkhead Cap Angle-Aft Side. Bombardier, Inc., Model CL-600-2A12 (601) airplanes, S/Ns 3001 through 3066 inclusive Bombardier Temporary Revision No. TR 5-269, dated October 25, 2023 B0201102-2-220, Rudder Pedal Potentiometer Coupling Setscrews. Bombardier, Inc., Model CL-600-2B16 (601-3A Variant) airplanes, S/Ns 5001 through 5134 inclusive; and Model CL-600-2B16 (601-3R Variant) airplanes, S/Ns 5135 through 5194 inclusive Bombardier Temporary Revision No. TR 5-282, dated December 23, 2022 53-10-01-103 *, Forward Pressure Bulkhead Cap Angle-Aft Side. Bombardier, Inc., Model CL-600-2B16 (601-3A Variant) airplanes, S/Ns 5001 through 5134 inclusive; and Model CL-600-2B16 (601-3R Variant) airplanes, S/Ns 5135 through 5194 inclusive Bombardier Temporary Revision No. TR 5-283, dated October 25, 2023 B0201102-2-220, Rudder Pedal Potentiometer Coupling Setscrews. Bombardier, Inc., Model CL-600-2B16 (604 Variant) airplanes, S/Ns 6050 through 6192 inclusive Bombardier Temporary Revision No. 5-2-5, dated October 16, 2023 32-51-04-101 *, Discard of the Nosewheel-Steering Control Potentiometer Coupling Setscrews, Part No. B0201102-2-220 (A/C 6194 and Subs or Post SB 650-32-007). Note 1 to table 2 to paragraph (g)(2): The asterisk (or "one star") with the last three digits of the task numbers listed in table 2 to paragraph (g)(2) of this AD indicates that the task is an airworthiness limitation task. (h) Retained No Alternative Actions and Intervals, With No Changes This paragraph restates the requirements of paragraph (i) of AD 2025-17-12, with no changes. 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 (l)(1) of this AD. (i) New Revision of the Existing Maintenance or Inspection Program for Certain Airplanes For airplanes identified in paragraph (c)(2) of this AD: Comply with paragraphs (i)(1) and (2) of this AD. (1) 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 the applicable TLMC document identified in table 3 to paragraph (i)(1) of this AD. The initial compliance time for doing the tasks is at the time specified in the applicable TLMC document identified in table 3 to paragraph (i)(1) of this AD, or within 90 days after the effective date of this AD, whichever occurs later, except as provided by paragraph (j) of this AD. Table 3 to Paragraph ( i )(1)-TLMC Documents Applicable airplanes TLMC part TLMC document Bombardier, Inc., Model CL-600-2B16 (604 Variant) airplanes, S/Ns 5301 through 5665 inclusive Part 2, "Airworthiness Limitations" Bombardier Challenger 604 TLMC, Publication No. CH 604 TLMC, Revision 33, November 22, 2022. 1 Bombardier, Inc., Model CL-600-2B16 (604 Variant) airplanes, S/Ns 5701 through 6049 inclusive Part 2, "Airworthiness Limitations" Bombardier Challenger 605 TLMC, Publication No. CH 605 TLMC, Revision 22, November 22, 2022. 1 The document identification number for ordering Bombardier Challenger 604 TLMC, Publication No. CH 604 TLMC is incorrectly identified as "CH 600 TLMC" on page 2 of the TLMC. For obtaining Part 2 of Bombardier Challenger 604 TLMC, Publication No. CH 604 TLMC, use Document Identification No. CH 604 TLMC. (2) 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 the applicable TRs identified in table 4 to paragraph (i)(2) of this AD. The initial compliance time for doing the tasks is at the time specified in the applicable TR identified in table 4 to paragraph (i)(2) of this AD, or within 90 days after the effective date of this AD, whichever occurs later. Table 4 to Paragraph ( i )(2)-Temporary Revisions Applicable airplanes TR Task number and title or life limit P/N and name Bombardier, Inc., Model CL-600-2B16 (604 Variant) airplanes, S/Ns 5301 through 5665 inclusive Bombardier Temporary Revision No. 5-2-73, dated October 25, 2023 32-51-04-101 *, Discard of the Nosewheel-Steering Control Potentiometer Coupling Setscrews, Part No. B0201102-2-220 (Post SB 604-32-033). Bombardier, Inc., Model CL-600-2B16 (604 Variant) airplanes, S/Ns 5701 through 6049 inclusive Bombardier Temporary Revision No. 5-2-29, dated October 25, 2023 32-51-04-101 *, Discard of the Nosewheel-Steering Control Potentiometer Coupling Setscrews, Part No. B0201102-2-220 (Post SB 605-32-010). Note 2 to table 4 to paragraph (i)(2): The asterisk (or "one star") with the last three digits of the task numbers listed in table 4 to paragraph (i)(2) of this AD indicates that the task is an airworthiness limitation task. (j) Compliance Time Exception for a Certain Task For airplanes identified in paragraph (c)(2) of this AD: The initial compliance time for task 27-42-01-110, "Special Detailed Inspection of the Horizontal Stabilizer Trim Actuator (HSTA), P/N 604-92305-7 and Subs (Vendor P/N 8454-3 and Subs)," of section 5-10-40, "Certification Maintenance Requirements," of Part 2, "Airworthiness Limitations," of Bombardier Challenger 604 TLMC, Publication No. CH 604 TLMC, Revision 33, dated November 22, 2022; or Bombardier Challenger 605 TLMC, Publication No. CH 605 TLMC, Revision 22, dated November 22, 2022; as applicable, is at the applicable compliance time specified in paragraph (j)(1) or (2) of this AD, or within 90 days after the effective date of this AD, whichever occurs later. (1) For HSTA having P/N 604-92305-3 (vendor P/N 8454-1) or P/N 604-92305-5 (vendor P/N 8454-2) that were replaced with P/N 604-92305-7 (vendor P/N 8454-3) in accordance with paragraph (j) of AD 2015-05-07, Amendment 39-18117 (80 FR 13483, March 16, 2015): Within 12 years after accomplishing the replacement. (2) For HSTA having P/N 604-92305-7 (vendor P/N 8454-3) manufactured before November 1, 2015: Within 12 years from the part entry into service. (k) New No Alternative Actions or Intervals After the existing maintenance or 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 or intervals are approved as an AMOC in accordance with the procedures specified in paragraph (l)(1) of this AD. (l) 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 (m) 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's Transport Canada Design Approval Organization (DAO). If approved by the DAO, the approval must include the DAO-authorized signature. (m) Additional Information For more information about this AD, contact Brenda L. Buitrago, Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; phone: 516-228 7300; email: 9-avs-nyaco-cos@faa.gov. (n) 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. (3) The following material was approved for IBR on October 31, 2025 (90 FR 46330, September 26, 2025). (i) Section 5-10-00, "Airworthiness Limitations," of Bombardier Challenger 600 Time Limits/Maintenance Checks (TLMC), Publication No. PSP 605, Revision 39, dated January 8, 2018. Note 3 to paragraph (n)(3)(i) : For obtaining this section of Bombardier Challenger 600 TLMC, Publication No. PSP 605, use Document Identification No. CH 600 TLMC. (ii) Section 5-10-00, "Airworthiness Limitations," of Bombardier Challenger 601 TLMC, Publication No. PSP 601-5, Revision 46, dated January 8, 2018. Note 4 to paragraph (n)(3)(ii): For obtaining this section Bombardier Challenger 601 TLMC, Publication No. PSP 601-5, use Document Identification No. CH 601 TLMC. (iii) Section 5-10-00, "Airworthiness Limitations," of Bombardier Challenger 601 TLMC, Publication No. PSP 601A-5, Revision 42, dated January 8, 2018. Note 5 to paragraph (n)(3)(iii): For obtaining this section of Bombardier Challenger 601 TLMC, Publication No. PSP 601A-5, use Document Identification No. CH 601 TLMC-1. (iv) Part 2, "Airworthiness Limitations," of Bombardier Challenger 604 TLMC, Publication No. CH 604 TLMC, Revision 33, dated November 22, 2022. Note 6 to paragraph (n)(3)(iv): The document identification number for ordering Bombardier Challenger 604 TLMC, Publication No. CH 604 TLMC is incorrectly identified as "CH 600 TLMC" on page 2 of the TLMC. For obtaining Part 2 of Bombardier Challenger 604 TLMC, Publication No. CH 604 TLMC, use Document Identification No. CH 604 TLMC. (v) Part 2, "Airworthiness Limitations," of Bombardier Challenger 605 TLMC, Publication No. CH 605 TLMC, Revision 22, dated November 22, 2022. (vi) Part 2, "Airworthiness Limitations," of Bombardier Challenger 650 TLMC, Publication No. CH 650 TLMC, Revision 9, dated November 22, 2022. (vii) Bombardier Temporary Revision No. 5-2-5, dated October 16, 2023. (viii) Bombardier Temporary Revision No. 5-2-29, dated October 25, 2023. (ix) Bombardier Temporary Revision No. 5-2-73, dated October 25, 2023. (x) Bombardier Temporary Revision No. TR 5-164, dated December 23, 2022. (xi) Bombardier Temporary Revision No. TR 5-165, dated October 25, 2023. (xii) Bombardier Temporary Revision No. TR 5-268, dated December 23, 2022. (xiii) Bombardier Temporary Revision No. TR 5-269, dated October 25, 2023. (xiv) Bombardier Temporary Revision No. TR 5-282, dated December 23, 2022. (xv) Bombardier Temporary Revision No. TR 5-283, dated October 25, 2023. (4) 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 https://my.bombardier.com/. (5) 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. (6) 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 July 9, 2026. Steven W. Thompson, Acting Deputy Director, Compliance & Airworthiness Division, Aircraft Certification Service. Issued on July 9, 2026. Steven W. Thompson, Acting Deputy Director, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2026-14110 Filed 7-13-26; 8:45 am]BILLING CODE 4910-13-P