Airworthiness Directives; Piaggio Aero Industries S.p.A. Model P-180 Airplanes

This amendment adopts a new airworthiness directive (AD) that applies to all Piaggio Aero Industries S.p.A. (Piaggio) Model P-180 airplanes. This AD requires you to inspect and determine whether any firewall shutoff or crossfeed valve with a serial number in a certain range is installed and requires you to replace any valve that has a serial number within this range. This AD allows the pilot to check the logbook and does not require the inspection and replacement requirement if the check shows that one of these valves is definitely not installed. This AD is the result of mandatory continuing airworthiness information (MCAI) issued by the airworthiness authority for Italy. The actions specified by this AD are intended to prevent a faulty firewall shutoff or crossfeed valve from developing cracks and leaking fuel. This could result in an engine fire.