BRENTWOOD, CA, USA
N61PC
HILLER UH-23-D
DURING AN AERIAL APPLICATION FLIGHT, THE TAIL BOOM WEIGHT SEPARATED AND CONTACTED THE TAIL ROTOR. THE PILOT LOST CONTROL OF THE AIRCRAFT AND COLLIDED WITH A TREE AND SUBSEQUENTLY THE TERRAIN. POST ACC INVEST REVEALED THAT THE 'PIP PINS' WHICH SECURE THE TAIL BOOM WEIGHT BROKE IN FLT ALLOWING MOVEMENT OF THE WEIGHT.
Source: NTSB Aviation Accident Database
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