Airworthiness Directive · Amendment 39-4077 · MD Helicopters LLC Helicopters
MD Helicopters LLC Helicopters
Superseded. A later AD replaced this one: AD 81-07-10 R1. Comply with the one in force.
This AD applies to MD Helicopters LLC 369.
The models as the FAA's AD index lists them. The serial ranges, installed parts and exceptions are in the AD itself: read it at the FAA.
This amendment adopts a new Airworthiness Directive (AD) which imposes an inspection schedule on the overrunning clutch assembly P/N 369A5350-601 and -603 and a Retirement life on the P/N 369A5364 sprag assembly, which it contains, used in the Hughes Helicopter Model 369 Series Helicopters equipped with any cargo hook. This AD is needed to prevent an overrunning clutch assembly failure which will result in the loss of engine power to the main rotor resulting in a hazardous emergency landing.
