Rotorcraft
FAA Proposes Rotor Blade AD for MD 500/600 Helicopters
The proposed airworthiness directive would mandate new repetitive inspections for main rotor blade cracks.

The FAA is proposing a new Airworthiness Directive mandating repetitive inspections of MD Helicopters single-engine 369, 500, and 600 models for main rotor blade (MRB) trim tab for gouges, nicks, scratches, and cracks. The AD covers MRBs manufactured by Helicopter Technology Co. (HTC) and covers part numbers 369A1100, 369D21100, 369D21102, 369D21120, 369D21121, 369D21123, 500P2100, and 500P2300.