Accident Bell 47G-3-B1 N94720, Wednesday 4 November 1992

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Date:	Wednesday 4 November 1992
Time:	12:05 LT
Type:	Bell 47G-3-B1
Owner/operator:	Colony Helicopters Inc.
Registration:	N94720
MSN:	67-159115
Total airframe hrs:	6656 hours
Engine model:	Lycoming TVO-435-D1A
Fatalities:	Fatalities: 0 / Occupants: 2
Other fatalities:	0
Aircraft damage:	Substantial
Category:	Accident
Location:	Palm Beach, FL - United States of America
Phase:	En route
Nature:	Agricultural
Departure airport:
Destination airport:
Investigating agency:	NTSB
Confidence Rating:	Accident investigation report completed and information captured

Narrative:
THE AGRICULTURAL PILOT STATED THAT HE HAD COMPLETED HIS SPRAYING AND HAD LANDED, WHEN A GROVE WORKER REQUESTED A RIDE OVER THE GROVE. WHILE MANEUVERING AT 150 FEET, THE ENGINE LOST POWER. DURING THE AUTOROTATION, THE ROTOR RPM DECAYED AND THE HELICOPTER LANDED HARD.

Probable Cause: THE PILOT'S INADEQUATE PREFLIGHT PLANNING. A FACTOR WAS THE PILOT'S FAILURE TO MAINTAIN ROTOR RPM DURING THE AUTOROTATION.

Accident investigation: