Summary
The FAA proposes to adopt a new airworthiness directive (AD) for Turbomeca Artouste III series turboshaft engines. This proposed AD would require modification of the engine air intake assembly. This proposed AD results from a report of an in-flight shutdown and subsequent loss of control of the helicopter due to ice ingestion into the engine. We are proposing this AD to prevent ice ingestion into the engine, which could lead to an in-flight shutdown and subsequent loss of control of the helicopter.