Airworthiness Directive · Amendment 39-11854 · AST, Inc, Rotorcraft Development Corporation, Southwest Florida Aviation International Helicopters
AST, Inc, Rotorcraft Development Corporation, Southwest Florida Aviation International Helicopters
Superseded. A later AD replaced this one: AD 2000-15-21 R1. Comply with the one in force.
This AD applies to AST, Inc, Rotorcraft Development Corporation, Southwest Florida Aviation International UH-1F, HH-1K, TH-1F, TH-1L, UH-1B, UH-1E, UH-1H, UH-1L, UH-1P, SW204 (UH-1B), SW204HP (UH-1B), SW205 (UH-1H), SW205A-1.
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) that applies to Bell Helicopter Textron Inc. (BHTI)-manufactured Model HH-1K, TH-1F, TH-1L, UH-1A, UH-1B, UH-1E, UH-1F, UH-1H, UH-1L, and UH-1P; and Southwest Florida Aviation SW204, SW204HP, SW205, and SW205A-1 helicopters. This AD requires removing and replacing certain main rotor mast (mast) assemblies. This AD is prompted by a BHTI-manufactured Model UH-1B accident due to fatigue failure of a thin-wall mast installed on the helicopter. The actions specified by this AD are intended to prevent fatigue failure of the mast and subsequent 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.
Aircraft
