Airworthiness Directive · Amendment 39-21253 · Landing gear
Piaggio Aero Industries S.p.A.
This AD applies to Piaggio Aero Industries S.p.A. Model P-180 airplanes, certificated in any category.
The FAA is adopting a new airworthiness directive (AD) for Piaggio Aero Industries S.p.A. Model P-180 airplanes. This AD results from mandatory continuing airworthiness information (MCAI) issued by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as insufficient sealing of a steering select/bypass valve installed in the nose landing gear (NLG) manifold. The FAA is issuing this AD to address the unsafe condition on these products.
Unless already done, do the following actions in paragraphs (f)(1) through (3) of this AD.
(1) For airplanes with NLG steering manifold part number (P/N) 72608 installed: (i) Within 50 hours time-in service after the effective date of this AD, do a steering manifold pressure leakage test and, if there is steering actuator movement during the test, replace the NLG steering manifold and repeat the test by following the Accomplishment Instructions, procedure steps (1) through (24), in Piaggio Aerospace Service Bulletin No. 80-0325, Revision 0, dated August 10, 2017.
(ii) If steering actuator movement occurs during procedure step (9) or procedure step (15) of the leakage test required in paragraph (f)(1)(i) of this AD, replacing the NLG steering manifold and repeating the steering manifold pressure leakage test is required before further flight.
(2) For all airplanes, after the effective date of this AD, do not install NLG steering manifold P/N 72608 on any airplane unless it has been inspected as specified in paragraph (f)(1) of this AD and no steering actuator movement occurred.
(3) For all airplanes, within 30 days after the effective date of this AD, revise the airplane flight manual (AFM) by replacing certain pages in the Emergency Procedures section of the AFM by following the Instructions in Piaggio Aerospace P.180 AVANTI II/EVO Temporary Change No. 89, dated August 30, 2017.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
Appliances and equipment
