Summary
This document proposes to adopt a new airworthiness directive (AD) that would apply to certain Industrie Aeronautiche E Meccaniche (I.A.M.) Model Piaggio P-180 airplanes that are equipped with a certain freon air conditioning system. The proposed action would require inspecting the baggage compartment for stringer or air cycle machine (ACM) by-pass duct damage, repairing any damage found, and modifying the freon air inlet duct and electrical wiring. The proposed AD results from trim system malfunction on one of the affected airplanes, resulting from contact between the freon air inlet duct and the electrical wiring. The actions specified by the proposed AD are intended to prevent trim system malfunction caused by contact between the freon air inlet duct and electrical wiring, which could result in loss of control of the airplane.