ASN Wikibase Occurrence # 288886
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| Date: | Thursday 1 September 2011 |
| Time: | 17:40 LT |
| Type: |  Bell UH-1H |
| Owner/operator: | P J Helicopters Inc |
| Registration: | N205PJ |
| MSN: | 64-13617 |
| Year of manufacture: | 1964 |
| Total airframe hrs: | 15000 hours |
| Engine model: | Lycoming T-53 |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Stockton, California -
 United States of America
|
| Phase: | En route |
| Nature: | Ferry/positioning |
| Departure airport: | Tracy Municipal Airport, CA (KTCY) |
| Red Bluff Municipal Airport, CA (RBL/KRBL) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
During cruise flight, the pilot noted a fluctuation in the engine oil pressure followed by the illumination of the red warning light indicating low oil pressure. He performed a precautionary landing, and at 10 feet above ground level, the engine lost total power. The helicopter subsequently landed hard on uneven terrain and rolled onto its left side. Postaccident examination of the engine revealed that a gear tooth on the starter-generator drive gear had separated. The separated tooth jammed the accessory gear drive train, which resulted in the failure of the engine oil pump and subsequent catastrophic engine failure due to oil starvation. The reason for the failure of the gear tooth could not be determined.
Probable Cause: A total loss of engine power due to the separation of a tooth from the starter-generator drive gear, which resulted in failure of the engine oil pump and subsequent oil starvation.
Accident investigation:
 |
|
Sources:
NTSB WPR11LA423
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 05-Oct-2022 07:21 | ASN Update Bot | Added |
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