Airworthiness Directive · Amendment 39-10108 · Bell Helicopter Textron, Inc. Model 214ST Helicopters
Bell Helicopter Textron, Inc. Model 214ST Helicopters
Model 214ST helicopters, equipped with an emergency float kit, part number (P/N) 214-706-120, containing emergency float inflation solenoid valves, P/N 214-073-929-103 or -105, in solenoid valve assemblies, P/N 214- 073-940-101 or -103, certificated in any category.
This amendment adopts a new airworthiness directive (AD), applicable to Bell Helicopter Textron, Inc. (BHTI) Model 214ST helicopters, that requires replacement of each emergency float inflation solenoid valve (valve). This amendment is prompted by two inadvertent inflations of emergency float systems that resulted from self- activations of the valves. The actions specified by this AD are intended to prevent self-activation of the valves, and subsequent inadvertent inflation of the emergency float system, which could lead to loss of control of the helicopter.
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.
