ASN Wikibase Occurrence # 386282
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| Date: | Tuesday 23 January 2001 |
| Time: | 08:45 LT |
| Type: |  Hughes 369D |
| Owner/operator: | Hawkins And Powers Aviation, Inc. |
| Registration: | N8353F |
| MSN: | 1260062D |
| Year of manufacture: | 1977 |
| Total airframe hrs: | 11037 hours |
| Engine model: | Allison 250-C20-B |
| Fatalities: | Fatalities: 0 / Occupants: 4 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Ely, NV -
 United States of America
|
| Phase: | En route |
| Nature: | Executive |
| Departure airport: | Ely-Yelland Airport, NV (ELY/KELY) |
| Ely, NV | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The single engine helicopter experienced a loss of engine power after the oil was inadvertently pumped overboard. A company mechanic replaced the torque gauge prior to the accident flight due to needle "bounce." The mechanic bled the torque system and reinstalled a radio that was removed to facilitate the work. During the radio installation, he inadvertently engaged the bleed valve, which is located behind the instrument panel, allowing oil to flow out of the engine from behind the instrument panel. While at 9,500 feet, the engine lost power and the pilot performed an autorotation landing to a field at the base of mountains. The pilot said he touched down smooth and light; however, the main rotor blades flexed and severed the tail boom. As a result of the accident, the operator rerouted the torque system bleed line toward the pilot's feet so that they could detect an inadvertent oil leak.
Probable Cause: The mechanic's inadvertent activation of the bleed valve, which resulted in a loss of engine oil and loss of engine power while in cruise flight.
Accident investigation:
 |
|
Sources:
NTSB LAX01LA079
History of this aircraft
Other occurrences involving this aircraft
| 11 April 2002 | N8353F | U.S. Fish & Wildlife Service | 0 | Richland, Washington | |
sub |
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 05-Apr-2024 13:11 | ASN Update Bot | Added |
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