Accident Bell UH-1B N64789, Monday 30 June 1986

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Date:	Monday 30 June 1986
Time:	06:10 LT
Type:	Bell UH-1B
Owner/operator:	Rogers Helicopters
Registration:	N64789
MSN:	62-4598
Total airframe hrs:	5163 hours
Engine model:	Lycoming T5311A
Fatalities:	Fatalities: 0 / Occupants: 1
Other fatalities:	0
Aircraft damage:	Substantial
Category:	Accident
Location:	Le Grand, CA - United States of America
Phase:	Initial climb
Nature:	Agricultural
Departure airport:
Destination airport:
Investigating agency:	NTSB
Confidence Rating:	Accident investigation report completed and information captured

Narrative:
THE HELICOPTER EXPERIENCED AN ENGINE FAILURE SHORTLY AFTER LIFT-OFF PRIOR TO A SPRAY RUN ON A NEARBY FIELD. THE ENGINE DECELERATED TO ZERO AND THE ACFT COLLIDED WITH THE GROUND. EXAMINATION OF THE ENGINE REVEALED THE TURBINE ROTOR WAS DESTROYED AND EVIDENCE OF OVERSPEED AND TENSION OVERLOAD WAS FOUND.

Probable Cause:

Accident investigation: