ASN Wikibase Occurrence # 43194
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| Date: | Thursday 26 July 1990 |
| Time: | 00:30 |
| Type: |  Air Tractor AT-401 |
| Owner/operator: | Grouleff Aviation |
| Registration: | N7315S |
| MSN: | 401-0673 |
| Year of manufacture: | 1987 |
| Total airframe hrs: | 1682 hours |
| Engine model: | P&W R1340-AN-1 |
| Fatalities: | Fatalities: 1 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | San Joaquin, CA -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Agricultural |
| Departure airport: | |
| , CA | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE PILOT EXPERIENCED AN ENGINE FAILURE DURING AERIAL APPLICATION, LANDED IN A FIELD AND THE AIRCRAFT FLIPPED OVER. THE AIRCRAFT REMAINED INTACT WITH NO FIRE. THE PILOT EXPIRED FROM 'POSITIONAL ASPHYXIA.' EXAMINATION OF THE ENGINE REVEALED THE NO. 4 CYLINDER WAS CRACKED AROUND THE COOLING FINS AND CONTINUED THROUGH THE CENTER OF THE SPARK PLUG BOSS. THE ENGINE HAD 7251 TOTAL HOURS AND 339 HOURS SINCE OVERHAUL. CAUSE: THE FAILURE OF THE NO. 4 CYLINDER HEAD.
Sources:
NTSB: http://www.ntsb.gov/ntsb/brief.asp?ev_id=20001212X23717
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-Oct-2008 10:30 | ASN archive | Added |
| 21-Dec-2016 19:24 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
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