2024-22-03: Electrical Power

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) 2024-04-11, Amendment 39-22690 (89 FR 21179, March 27, 2024); and b. Adding the following new AD: 2024-22-03 Airbus Canada Limited Partnership (Type Certificate Previously Held by C Series Aircraft Limited Partnership (CSALP); Bombardier, Inc.): Amendment 39-22874; Docket No. FAA-2024-2415; Project Identifier MCAI-2024-00545-T. (a) Effective Date This airworthiness directive (AD) is effective November 14, 2024. (b) Affected ADs This AD replaces AD 2024-04-11, Amendment 39-22690 (89 FR 21179, March 27, 2024) (AD 2024-04-11). (c) Applicability This AD applies to 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, as identified in Transport Canada Emergency AD CF-2024-34, dated September 19, 2024 (Transport Canada Emergency AD CF-2024-34), or Transport Canada Emergency AD CF-2024-34R1, dated October 15, 2024 (Transport Canada Emergency AD CF-2024-34R1). (d) Subject Air Transport Association (ATA) of America Code 24, Electrical Power. (e) Unsafe Condition This AD was prompted by a report of damage to a variable frequency generator (VFG) power-feeder harness, resulting in the loss of the associated VFG and the posting of the L GEN FAIL (Caution) message. An investigation determined that the damage occurred after incorporation of Part C of Airbus Canada Limited Partnership (ACLP) Service Bulletin (SB) BD500-534101 (ACLP SB BD500-534101) at Issue 005 through 008, which introduced a new bracket to move the VFG power-feeder harness. The FAA is issuing this AD to address damage to VFG power-feeder harnesses caused by unsupported VFG power-feeder harness length. The unsafe condition, if not addressed, could lead to a loss of generated power from both VFGs and loss of critical aircraft systems if alternate generators are also lost. (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, Transport Canada Emergency AD CF-2024-34 or Transport Canada Emergency AD CF-2024-34R1. (h) Exceptions to Transport Canada Emergency AD CF-2024-34 and AD CF-2024-34R1 (1) Where Transport Canada Emergency AD CF-2024-34 refers to its effective date, this AD requires using the effective date of this AD. (2) Where Transport Canada Emergency AD CF-2024-34R1 refers to the effective date of AD CF-2024-34 (22 September 2024), this AD requires using the effective date of this AD. (3) Where Transport Canada Emergency AD CF-2024-34 and AD CF-2024-34R1 refer to "hours air time," this AD requires replacing those words with "flight hours." (4) Where Transport Canada Emergency AD CF-2024-34 and AD CF-2024-34R1 define "Group B aeroplanes," replace that definition with "Model BD-500-1A10 airplanes, having serial numbers 50001 through 50047, and Model BD-500-1A11 airplanes, having serial numbers 55001 through 55070, which have not incorporated Part C of the Accomplishment Instructions of ACLP SB BD500-534101, Issue 005, dated June 12, 2020, Issue 006, dated August 14, 2020, Issue 007, dated October 2, 2020, or Issue 008, dated March 13, 2024." (5) Where Transport Canada Emergency AD CF-2024-34 and AD CF-2024-34R1 define "Applicable MMEL Items," replace that definition with figure 1 to paragraph (h)(5) of this AD. BILLING CODE 4910-13-P ER30OC24.020 BILLING CODE 4910-13-C (6) Paragraph A. of Part I of Transport Canada Emergency AD CF-2024-34 and AD CF-2024-34R1 refer to airplanes with less than 6 flight cycles since "ACLP SB BD500-534101 Part C incorporation," for this AD, that paragraph applies to airplanes with less than 6 flight cycles as of the effective date of this AD since "ACLP SB BD500-534101 Part C incorporation." (7) Paragraph B. of Part I of Transport Canada Emergency AD CF-2024-34 and AD CF-2024-34R1 refer to airplanes with 6 flight cycles or more since "ACLP SB BD500-534101 Part C incorporation," for this AD, that paragraph applies to airplanes with 6 flight cycles or more as of the effective date of this AD since "ACLP SB BD500-534101 Part C incorporation." (i) No Reporting Requirement Although the note in Part I of Transport Canada AD CF-2024-34 and AD CF-2024-34R1 specify to submit certain information to Transport Canada or 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, 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 (k) of this AD and email to: [email protected]. 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 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 paragraph (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 William Reisenauer, Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; phone: 516-228-7300; email: [email protected]. (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 Emergency AD CF-2024-34, dated September 19, 2024. (ii) Transport Canada Emergency AD CF-2024-34R1, dated October 15, 2024. (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 [email protected]; 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 the availability of this material at NARA, visit www.archives.gov/federal-register/cfr/[email protected]. Issued on October 24, 2024. Peter A. White, Deputy Director, Integrated Certificate Management Division, Aircraft Certification Service. [FR Doc. 2024-25247 Filed 10-28-24; 11:15 am]BILLING CODE 4910-13-P