Airworthiness Directives; Eurocopter France Model EC225LP Helicopters

요약

This document publishes in the Federal Register an amendment adopting Airworthiness Directive (AD) 2009-09-51, which was sent previously to all known U.S. owners and operators of Eurocopter France (Eurocopter) Model EC225LP helicopters by individual letters. This AD requires, before further flight, determining if the "CHIP" detector light on the instrument panel (Vehicle Monitoring System Screen) previously illuminated. If the "CHIP" detector light did illuminate and it illuminated because of a metal particle on the magnetic plug of the epicyclic reduction gear module (module) of the main gearbox (MGB), or if you cannot determine from the maintenance records which chip detector caused the "CHIP" detector light to illuminate or whether the detector light stayed illuminated after the "CHIP" detector switch was turned to the "CHIP PULSE" setting, replacing the module with an airworthy module is required before further flight. Also required before further flight is inspecting the MGB module magnetic chip detector electrical circuit and determining whether the system is functioning properly, including whether the "CHIP" detector light annunciates on the instrument panel (Vehicle Monitor