Airworthiness Directive · Amendment 39-23101 · Time limits/maintenance checks
BAE Systems (Operations) Limited Airplanes
This AD applies to all BAE Systems (Operations) Limited Model 4101 airplanes, certificated in any category.
The FAA is superseding Airworthiness Directive (AD) 2023-02- 06, which applied to all BAE Systems (Operations) Limited Model 4101 airplanes. AD 2023-02-06 required revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive airworthiness limitations. Since the FAA issued AD 2023-02- 06, new or more restrictive airworthiness limitations have been developed. This AD continues to require certain actions in AD 2023-02- 06 and requires revising the existing maintenance or inspection program, as applicable to incorporate new or more restrictive airworthiness limitations. The FAA is issuing this AD to address the unsafe condition on these products.
This paragraph restates the requirements of paragraph (m) of AD 2023-02-06, with a new terminating action. Within 90 days after March 14, 2023 (the effective date of AD 2023-02-06): Revise the existing maintenance or inspection program, as applicable, by incorporating Subjects 05-10-10, “Airworthiness Limitations”; 05-10-20, “Certification Maintenance Requirements”; and 05-10-30, “Critical Design Configuration Control Limitations (CDCCL)—Fuel System”; of Chapter 05, “Airworthiness Limitations,” of the BAE Systems (Operations) Limited J41 Aircraft Maintenance Manual (AMM), Effectivity Group 403, Revision 44, dated June 15, 2021; or BAE Systems (Operations) Limited J41 AMM, Effectivity Group 408, Revision 44, dated June 15, 2021; as applicable. The initial compliance times for the tasks are at the applicable times specified in paragraphs (g)(1) through (3) of this AD. Accomplishing the revision of the existing maintenance or inspection program required by paragraph (i) of this AD terminates the requirements of this paragraph.
(1) For replacement tasks of life limited parts specified in Subject 05-10-10, “Airworthiness Limitations,” of Chapter 05, “Airworthiness Limitations,” of the BAE Systems (Operations) Limited J41 AMM, Effectivity Group 403, Revision 44, dated June 15, 2021; or BAE Systems (Operations) Limited J41 AMM, Effectivity Group 408, Revision 44, dated June 15, 2021; as applicable: Prior to the applicable flight cycles (landings) or flight hours (flying hours) on the part specified in the “Mandatory Life Limits” column in Subject 05-10-10, or within 90 days after March 14, 2023, whichever occurs later.
(2) For structurally significant item tasks specified in Subject 05-10-10, “Airworthiness Limitations,” of Chapter 05, “Airworthiness Limitations,” of the BAE Systems (Operations) Limited J41 AMM, Effectivity Group 403, Revision 44, dated June 15, 2021; or BAE Systems (Operations) Limited J41 AMM, Effectivity Group 408, Revision 44, dated June 15, 2021; as applicable: Prior to the accumulation of the applicable flight cycles specified in the “Initial Inspection” column in Subject 05-10-10, or within 90 days after March 14, 2023, whichever occurs later.
(3) For certification maintenance requirements tasks specified in Subject 05-10-20, “Certification Maintenance Requirements,” of Chapter 05, “Airworthiness Limitations,” of the BAE Systems (Operations) Limited J41 AMM, Effectivity Group 403, Revision 44, dated June 15, 2021; or BAE Systems (Operations) Limited J41 AMM, Effectivity Group 408, Revision 44, dated June 15, 2021; as applicable: Prior to the accumulation of the applicable flight hours specified in the “Time Between Checks” column in Subject 05-10-20, or within 90 days after March 14, 2023, whichever occurs later; except for tasks that specify “first flight of the day” in the “Time Between Checks” column in Subject 05-10-20, the initial compliance time is the first flight of the next day after accomplishing the revision required by paragraph (g) of this AD, or within 90 days after March 14, 2023, whichever occurs later.
This paragraph restates the requirements of paragraph (n) of AD 2023-02-06, with a new exception. Except as required by paragraph (i) of this AD: After the existing maintenance or inspection program has been revised as required by paragraph (g) of this AD, no alternative actions (e.g., inspections), intervals, or CDCCLs may be used unless the actions, intervals, and CDCCLs are approved as an AMOC in accordance with the procedures specified in paragraph (k)(1) of this AD.
Within 90 days after the effective date of this AD, revise the existing maintenance or inspection program, as applicable, as specified in paragraphs (i)(1) and (2) of this AD. Accomplishing the revision of the existing maintenance or inspection program required by this paragraph terminates the actions required by paragraph (g) of this AD.
(1) Revise the existing maintenance or inspection program, as applicable, to incorporate the information specified in Subject 05-10-10, “Airworthiness Limitations,” of Chapter 05, “Airworthiness Limitations,” of BAE Systems (Operations) Limited J41 AMM, Revision 46, dated February 20, 2024. The initial compliance time for doing the tasks is at the applicable times specified in paragraphs (i)(1)(i) and (ii) of this AD.
(i) For replacement tasks of life limited parts specified in Subject 05-10-10, “Airworthiness Limitations,” of Chapter 05, “Airworthiness Limitations,” of BAE Systems (Operations) Limited J41 AMM, Revision 46, dated February 20, 2024: Prior to the applicable flight cycles (landings) or flight hours (flying hours) on the part specified in the “Mandatory Life Limits” column in Subject 05-10-10, or within 90 days after the effective date of this AD, whichever occurs later.
(ii) For structurally significant item tasks specified in Subject 05-10-10, “Airworthiness Limitations,” of Chapter 05, “Airworthiness Limitations,” of BAE Systems (Operations) Limited J41 AMM, Revision 46, dated February 20, 2024: Prior to the accumulation of the applicable flight cycles (flights) or years specified in the “Initial Inspection” column in Subject 05-10-10, or within 90 days after the effective date of this AD, whichever occurs later.
(2) Revise the existing maintenance or inspection program, as applicable, to incorporate the information in appendix A to this AD—Subject 05-10-20, “Certification Maintenance Requirements,” and in appendix B to this AD—Subject 05-10-30, “Critical Design Configuration Control Limitations (CDCCL)—Fuel System.” The initial compliance time for doing the certification maintenance requirements tasks specified in Subject 05-10-20, “Certification Maintenance Requirements” (appendix A) is prior to the accumulation of the applicable flight hours specified in the “Time Between Checks” column in Subject 05-10-20, or within 90 days after the effective date of this AD, whichever occurs later; except for tasks that specify “first flight of the day” in the “Time Between Checks” column in Subject 05-10-20, the initial compliance time is the first flight of the next day after accomplishing the revision required by paragraph (i) of this AD, or within 90 days after the effective date of this AD, whichever occurs later.
After the existing maintenance or inspection program has been revised as required by paragraph (i) of this AD, no alternative actions (e.g., inspections), intervals, or CDCCLs may be used unless the actions, intervals, and CDCCLs are approved as an alternative method of compliance (AMOC) in accordance with the procedures specified in paragraph (k)(1) of this AD.
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 (l) 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 the UK CAA; or BAE Systems (Operations) Limited's UK CAA Design Organization Approval (DOA). If approved by the DOA, the approval must include the DOA-authorized signature.
For more information about this AD, contact Steven Dzierzynski, Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; phone: 516-228-7300; email: 9-AVS-AIR-BACO-COS@faa.gov.
