ASN Wikibase Occurrence # 353280
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| Date: | Tuesday 25 May 1999 |
| Time: | 18:30 LT |
| Type: |  Grumman G-164B Ag-Cat |
| Owner/operator: | Central Valley Aviation |
| Registration: | N6524K |
| MSN: | 352B |
| Year of manufacture: | 1977 |
| Total airframe hrs: | 4994 hours |
| Engine model: | P&W R-1340 |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Buxton, ND -
 United States of America
|
| Phase: | En route |
| Nature: | Agricultural |
| Departure airport: | (NA18) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot said the engine began to run rough during cruise. Then the engine blew smoke and oil and the windshield became covered with oil. The pilot turned the airplane towards the airport. On the approach to runway 09, the pilot had no visibility through the oil and the airplane had run off a road leading to the runway's centerline and an embankment in the safety area before the approach end of runway 09 during his forced landing. The airplane came to rest inverted next to the embankment. The number one cylinder head was found separated from its cylinder and was inspected. The inspection revealed no indications of preexisting cracks in the cylinder head. The separation occurred in the combustion dome between the cylinder head and the screw on cylinder barrel. The cylinder head revealed marks and dents consistent with piston ring or piston crown contact.
Probable Cause: the number one cylinder's separation, the pilot's visual lookout not possible through the oil given off by the number one cylinder, and the embankment. A factor in the accident was the oil.
Accident investigation:
 |
|
Sources:
NTSB CHI99LA162
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 09-Mar-2024 12:16 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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