2025-25-13: Powerplant System

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: 2025-25-13 Leonardo S.p.A.: Amendment 39-23221; Docket No. FAA-2025-5392; Project Identifier MCAI-2025-01494-R. (a) Effective Date This airworthiness directive (AD) is effective January 13, 2026. (b) Affected ADs None. (c) Applicability This AD applies to Leonardo S.p.A. Model A119 and AW119 MKII helicopters, certificated in any category. (d) Subject Joint Aircraft System Component (JASC) Code 7100, Powerplant System. (e) Unsafe Condition This AD was prompted by reports of trapped residue in the rear pneumatic line due to non-optimal cleaning procedures. The FAA is issuing this AD to detect and correct a contaminated rear pneumatic line. The unsafe condition, if not corrected, could result in uncommanded fuel flow changes, which could lead to accelerations, power rollbacks, or instability, and consequent reduced control of the helicopter. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Required Actions 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 AD 2025-0199, dated September 16, 2025 (EASA AD 2025-0199). (h) Exceptions to EASA AD 2025-0199 (1) Where EASA AD 2025-0199 refers to its effective date, this AD requires using the effective date of this AD. (2) Where EASA AD 2025-0199 requires compliance in terms of flight hours, this AD requires using hours time-in-service. (3) Where the definition of affected engines, affected FCU [fuel control unit], affected pneumatic line, and serviceable pneumatic line in EASA AD 2025-0199 all refer to "the P&WC SB No. A39125R1", for this AD replace that text with "the applicable original issue of the alert service bulletin listed in the Ref. Publications section (referencing P&WC SB No. A39125R1)". (4) Where paragraph (1) and paragraph (4.2) of EASA AD 2025-0199 specifies "accomplish acceleration checks of the engine in accordance with the instructions of the Part 1 of the ASB (referencing Part A of the P&WC SB No. A39125R1)", for this AD replace that text with "accomplish acceleration checks of the engine". The owner/operator (pilot) holding at least a private pilot certificate may perform the checks required by paragraph (g) of this AD and must enter compliance with these paragraphs into the helicopter maintenance 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. (5) Where paragraph (5) of EASA AD 2025-0199 specifies to replace the affected pneumatic line with a serviceable pneumatic line within 300 FH or 24 months, whichever occurs first, for this AD that replacement is only required before further flight per paragraph (2) of EASA AD 2025-0199. For this AD if not required by paragraph (2) of EASA AD 2025-0199 this replacement is an optional terminating action for the repetitive acceleration checks required by paragraph (1) of EASA AD 2025-0199. (6) This AD does not adopt the "Remarks" section of EASA AD 2025-0199. (i) No Reporting Requirement Although the material referenced in EASA AD 2025-0199 specifies to submit certain information to the manufacturer, this AD does not require that action. (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 local flight standards district office/certificate holding district office. (k) Additional Information For more information about this AD, contact Mahmood Shah, Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; phone: (817) 222-5538; email: mahmood.g.shah@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 2025-0199, dated September 16, 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 the EASA material on the EASA website at ad.easa.europa.eu . (4) You may view this material at the FAA, Office of the Regional Counsel, Southwest Region, 10101 Hillwood Parkway, Room 6N-321, Fort Worth, TX 76177. 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 December 12, 2025. Steven W. Thompson, Acting Deputy Director, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2025-23861 Filed 12-22-25; 11:15 am]BILLING CODE 4910-13-P