AD 2025-25-13: Leonardo S.p.A. Helicopters

What the FAA requires

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.

Read the full directive on the Federal Register →

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 alrea

Part numbers this directive names

This directive does not name specific part numbers in its text; it applies by aircraft model. See the applicability above and the manufacturer's service bulletin it references.