2021-23-19: Electrical Power System

1. The authority citation for part 39 continues to read as follows: Authority: 49 U.S.C. 106(g), 40113, 44701. § 39.13 [Amended] 2. The FAA amends § 39.13 by adding the following new airworthiness directive: 2021-23-19 Pacific Aerospace Limited: Amendment 39-21818; Docket No. FAA-2021-0213; Project Identifier 2018-CE-036-AD. (a) Effective Date This airworthiness directive (AD) is effective January 11, 2022. (b) Affected ADs None. (c) Applicability This AD applies to Pacific Aerospace Limited Model 750XL airplanes, serial numbers up to and including 222, certificated in any category, with the battery installed within the engine bay at the firewall. (d) Subject Joint Aircraft System Component (JASC) Code 2400, Electrical Power System. (e) Reason This AD was prompted by mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI identifies the unsafe condition as insufficient separation of ground terminations for individual power sources and static grounds. The FAA is issuing this AD to detect and correct ground terminations with insufficient separation, which could lead to loss of primary and secondary power sources if the ground connection fails and consequent simultaneous loss of multiple airplane systems. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Inspection and Corrective Action (1) Within 12 months after the effective date of this AD, inspect the battery installation in the engine bay to determine if the ground leads connect to a single ground stud as shown in the Accomplishment Instructions, figure 2, of Pacific Aerospace Mandatory Service Bulletin PACSB/XL/104, Issue 1, dated May 2, 2018 (PACSB/XL/104I1). (2) If the ground leads connect to a single ground stud, before further flight, separate the battery ground lead connections by following the Accomplishment Instructions, steps 4 through 36, of PACSB/XL/104I1. (h) Alternative Methods of Compliance (AMOCs) (1) The Manager, International Validation Branch, 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 local Flight Standards District 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 (i)(1) of this AD or email: [email protected]. (2) Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the local flight standards district office/certificate holding district office. (i) Related Information (1) For more information about this AD contact Mike Kiesov, Aviation Safety Engineer, FAA, General Aviation & Rotorcraft Section, International Validation Branch, 901 Locust, Room 301, Kansas City, MO 64106; (816) 329-4144; fax: (816) 329-4090; email: [email protected]. (2) Refer to Civil Aviation Authority (CAA) of New Zealand AD DCA/750XL/30, dated July 5, 2018, for related information. You may examine the CAA AD at https://www.regulations.gov by searching for and locating Docket No. FAA-2021-0213. (j) Material Incorporated by Reference (1) The Director of the Federal Register approved the incorporation by reference of the service information listed in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51. (2) You must use this service information as applicable to do the actions required by this AD, unless the AD specifies otherwise. (i) Pacific Aerospace Mandatory Service Bulletin PACSB/XL/104, Issue 1, dated May 2, 2018. (ii) [Reserved] (3) For Pacific Aerospace Limited service information identified in this AD, contact the Civil Aviation Authority of New Zealand, Level 15, Asteron Centre, 55 Featherston Street, Wellington 6011; phone: +64 4 560 9400; fax: +64 4 569 2024; email: [email protected]. (4) You may view this service information at FAA, Airworthiness Products Section, Operational Safety Branch, 901 Locust, Kansas City, MO 64106. For information on the availability of this material at the FAA, call (816) 329-4148. (5) You may view this service information that is incorporated by reference at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, email: [email protected], or go to: https://www.archives.gov/federal-register/cfr/ibr-locations.html. Issued on November 4, 2021. Lance T. Gant, Director, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2021-26495 Filed 12-6-21; 8:45 am]BILLING CODE 4910-13-P