ASN Wikibase Occurrence # 359271
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| Date: | Monday 6 March 1995 |
| Time: | 17:00 LT |
| Type: |  Bell 206L |
| Owner/operator: | Biscayne Helicopters Inc. |
| Registration: | N164BH |
| MSN: | 46602 |
| Total airframe hrs: | 15322 hours |
| Engine model: | Allison250-C20B |
| Fatalities: | Fatalities: 0 / Occupants: 3 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Miami, FL -
 United States of America
|
| Phase: | Unknown |
| Nature: | Survey |
| Departure airport: | , FL (X44) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot stated that while maneuvering at 250-300 feet, video taping a boat, he heard three dull thumps and the helicopter began to settle and the engine appeared to lose power. He lowered collective and nosed over. The engine power seemed low and he elected to land on the water. Postcrash examination of the aircraft structure, aircraft systems, flight controls, engine assembly, and all engine controls revealed no evidence to indicate precrash failure or malfunction. Uncontaminated Jet-A fuel was found in the airframe and engine fuel systems. About 2 minutes of audio information from the video camera that was being used by the passenger-photographer on the helicopter was subjected to frequency analysis. This analysis showed the engine N-1 speed was steady at 92% until 6.99 seconds before water impact when it decreased steadily to flight idle. Rotor speed remained steady at 99.8% until the N-1 speed began to decrease to idle. Rotor speed then dropped to 92.3% and the low rotor warning horn activated at 96.3% rotor speed. No thumps as reported by the pilot could be heard.
Probable Cause: THE FAILURE OF THE PILOT-IN-COMMAND TO MAINTAIN ADEQUATE ENGINE POWER WHILE MANEUVERING, HIS FAILURE TO TAKE REMEDIAL ACTION TO RECOVER FROM THE RESULTING DESCENT, AND HIS DECISION TO MAKE A PRECAUTIONARY LANDING ON THE WATER.
Accident investigation:
 |
|
Sources:
NTSB MIA95LA084
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 15-Mar-2024 08:48 | ASN Update Bot | Added |
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