Airworthiness Directive · Amendment 39-12131 · Eurocopter France Model EC120B Helicopters
Eurocopter France Model EC120B Helicopters
Superseded. A later AD replaced this one: AD 2016-12-13. Comply with the one in force.
Model EC120B helicopters, with engine to main gearbox (MGB) coupling tube assembly (tube), part number C631A1101101, installed, certificated in any category.
This amendment adopts a new airworthiness directive (AD) for Eurocopter France Model EC120B helicopters. This action requires visually checking the engine to main gearbox coupling tube assembly (tube) for a crack and replacing any cracked tube. This amendment is prompted by a report of a crack detected on a tube. The actions specified by this AD are intended to prevent a tube failure, loss of engine drive, and a subsequent forced landing.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
