2026-12-01: Central Maint., Computer

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: 2026-12-01 Pilatus Aircraft Ltd.: Amendment 39-23371; Docket No. FAA-2026-2715; Project Identifier MCAI-2025-01779-A. (a) Effective Date This airworthiness directive (AD) is effective July 14, 2026. (b) Affected ADs None. (c) Applicability This AD applies to Pilatus Aircraft Ltd. Model PC-12/47E airplanes, manufacturer serial numbers 1720 and 2001 through 2476, certificated in any category. (d) Subject Joint Aircraft System Component (JASC) Code 4500, Central Maint., Computer. (e) Unsafe Condition This AD was prompted by a report of the stall warning protection system (SWPS) engaging when not appropriate. The FAA is issuing this AD to ensure the update of the certified operational software and prevent the inappropriate activation of the SWPS. The unsafe condition, if not addressed, could result in reduced safety margins of the airplane, increased pilot workload, and reduced control of the airplane. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Required Actions (1) Except as specified in paragraphs (h) and (i) of this AD: Comply with all required actions and compliance times specified in, and in accordance with, European Union Aviation Safety Agency (EASA) AD 2025-0271, dated December 2, 2025 (EASA AD 2025-0271). (2) The owner/operator (pilot) holding at least a private pilot certificate may revise the existing pilot's operating handbook (POH) for the airplane and must enter compliance with this requirement into the aircraft records in accordance with 14 CFR 43.9(a) and 91.417(a)(2)(v). The record must be maintained as required by 14 CFR 91.417, 121.380, or 135.439. (h) Exceptions to EASA AD 2025-0271 (1) Where EASA AD 2025-0271 refers to its effective date, this AD requires using the effective date of this AD. (2) Where paragraph (4) of EASA AD 2025-0271 specifies to "Implement the instructions of the POH TR as required by paragraph (4.1) or (4.2) of this AD, as applicable", this AD requires replacing that text with "revise the Emergency Procedures section and Airplane and Systems Description section of the existing POH for the airplane by inserting a copy of the POH TR [Temporary Revision] as defined in EASA AD 2025-0271". (3) This AD does not adopt the "Remarks" section of EASA AD 2025-0271. (i) No Reporting Requirement Although the service material referenced in EASA AD 2025-0271 specifies to submit certain information to the manufacturer, this AD does not include those requirements. (j) Alternative Methods of Compliance (AMOCs) (1) 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 local Flight Standards District 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: AMOC@faa.gov. (2) Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the responsible flight standards district office/certificate holding district office. (k) Additional Information For more information about this AD, contact Doug Rudolph, Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; phone: (816) 329-4059; email: doug.rudolph@faa.gov. (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 the AD specifies otherwise. (i) European Union Aviation Safety Agency (EASA) AD 2025-0271, dated December 2, 2025. (ii) [Reserved] (3) For EASA material identified in this AD, contact EASA, Konrad-Adenauer-Ufer 3, 50668 Cologne, Germany; phone: +49 221 8999 000; email: ADs@easa.europa.eu; website: easa.europa.eu. You may find this EASA AD on the EASA website at ad.easa.europa.eu. (4) You may view this material at the FAA, Airworthiness Products Section, Operational Safety Branch, 1100 Main, Kansas City, MO 64105. For information on the availability of this material at the FAA, call (817) 222-5110. (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 June 2, 2026. Steven W. Thompson, Acting Deputy Director, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2026-11528 Filed 6-8-26; 8:45 am]BILLING CODE 4910-13-P