ASN Wikibase Occurrence # 357748
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| Date: | Wednesday 21 February 1996 |
| Time: | 15:00 LT |
| Type: |  Grumman G-164B Ag-Cat |
| Owner/operator: | Haley Flying Service, Inc |
| Registration: | N6674Q |
| MSN: | 196B |
| Total airframe hrs: | 7449 hours |
| Engine model: | P&W R-985-AN1 |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Tracy, CA -
 United States of America
|
| Phase: | Initial climb |
| Nature: | Agricultural |
| Departure airport: | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot reported that he was about 1/4 mile from the airport at 50 feet in the initial climb, when the engine began a severe vibration, then it stopped, abruptly. The pilot selected the only available landing area, which was a muddy field, and the aircraft nosed over during the landing ground roll. Preliminary examination of the engine revealed that the crankshaft was seized and would not move. Partial disassembly of the engine revealed that it had sustained a catastrophic internal failure. The No. 5 piston (master) was found out of it's respective cylinder, with the connecting rod elongated and bent. The rod end cap was attached on one side and separated on the other. Evidence of heat and stretching was observed near the crankpin area of the rod. The bearing could not be examined due to internal damage of the engine.
Probable Cause: overheating and failure of the engine's master rod and master rod bearing due to oil starvation. A factor relating to the accident was: the lack of suitable terrain for an emergency landing.
Accident investigation:
 |
|
Sources:
NTSB LAX96LA124
History of this aircraft
Other occurrences involving this aircraft
| 28 September 1983 | N6674Q | Private | 0 | Selah, WA | |
sub |
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 14-Mar-2024 06:13 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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