Airworthiness Directive · Amendment 39-23221 · Powerplant system
Leonardo S.p.A. Helicopters
This AD applies to Leonardo S.p.A. Model A119 and AW119 MKII helicopters, certificated in any category.
The FAA is adopting a new airworthiness directive (AD) for all Leonardo S.p.A. Model A119 and AW119 MKII helicopters. This AD was prompted by reports of trapped residue in the rear pneumatic line due to a non-optimal cleaning procedure. This AD requires accomplishing repetitive engine acceleration checks and, depending on the results, replacing the rear pneumatic line and inspecting the fuel control unit (FCU), and accomplishing any necessary corrective actions. This AD also requires replacing certain parts if the engine acceleration check exceeds the maximum limit, which terminates the repetitive acceleration checks. If the limits do not exceed the maximum limit, this AD would allow this replacement as an optional terminating action. Additionally, this AD prohibits installing an affected engine or FCU on a helicopter unless certain requirements are met. The FAA is issuing this AD to address the unsafe condition on these products.
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).
(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.
Although the material referenced in EASA AD 2025-0199 specifies to submit certain information to the manufacturer, this AD does not require that action.
