ASN Wikibase Occurrence # 295587
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Date: | Thursday 3 July 2003 |
Time: | 14:00 LT |
Type: | Stinson 108-3 |
Owner/operator: | Private |
Registration: | N6088M |
MSN: | 4088 |
Total airframe hrs: | 2697 hours |
Engine model: | Franklin 6A4-165-B4 |
Fatalities: | Fatalities: 0 / Occupants: 2 |
Aircraft damage: | Substantial |
Category: | Accident |
Location: | Hendersonville, Tennessee -
United States of America
|
Phase: | Unknown |
Nature: | Private |
Departure airport: | Conway, AR (M03) |
Destination airport: | Gallatin, TN (M33) |
Investigating agency: | NTSB |
Confidence Rating: | Accident investigation report completed and information captured |
Narrative:The pilot stated he was in cruise flight at 3,500 feet, about 17 miles from the destination airport when he noticed a slight decrease in engine rpm and oil pressure. He started his descent to his destination airport and started looking for a forced landing area. The rpm continued to decrease, and he elected to make a forced landing to a grassy field. He made a base leg, turned final, and lowered the flaps to the full down position. On touchdown the landing gear collided with ruts that he did not see from the air, and the airplane nosed over. Disassembly of the engine assembly showed three cylinders and three connecting rods had failed. The crankshaft journals were heavily scored and burned. Portions of two connecting rod bolts were recovered from the oil sump. The bolts had severe necking and had plasticized. The oil sump was removed to access the oil pump and lubrication pick-up screen. The screen was free of significant amounts of debris. The oil pump was removed and showed no signs of failure or contamination that would have caused failure to properly supply oil to the engine. The pressure regulator and pressure relief valve were examined and there was no evidence that either had failed. It could not be determined why the engine ceased oiling.
Probable Cause: The total loss of engine power due to loss of oil pressure for undetermined reasons, resulting in a forced landing and nose over on none suitable terrain.
Accident investigation:
|
| |
Investigating agency: | NTSB |
Report number: | ATL03LA117 |
Status: | Investigation completed |
Duration: | 4 months |
Download report: | Final report |
|
Sources:
NTSB ATL03LA117
Revision history:
Date/time | Contributor | Updates |
13-Oct-2022 10:19 |
ASN Update Bot |
Added |
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