ASN Wikibase Occurrence # 361327
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| Date: | Saturday 11 September 1993 |
| Time: | 10:15 LT |
| Type: |  Air Tractor AT-301 |
| Owner/operator: | Private |
| Registration: | N36613 |
| MSN: | 301-0344 |
| Year of manufacture: | 1981 |
| Total airframe hrs: | 5100 hours |
| Engine model: | P&W R-1340 |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Deatsville, AL -
 United States of America
|
| Phase: | En route |
| Nature: | Agricultural |
| Departure airport: | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
WHILE IN CRUISE FLIGHT BETWEEN AERIAL APPLICATION SITES, THE PILOT REPORTED THAT THE ENGINE BACKFIRED THREE TIMES AND THEN LOST POWER. THE PILOT'S ATTEMPTS TO RESTORE FULL POWER WERE UNSUCCESSFUL AND THE PILOT SELECTED AN OPEN FIELD FOR AN EMERGENCY LANDING; DURING LANDING ROLL, THE AIRPLANE STRUCK A TREE. DURING THE AIRCRAFT EXAMINATION, AN ENGINE RUN WAS ACCOMPLISHED USING INSTALLED AIRFRAME COMPONENTS AND SYSTEMS, BUT FULL POWER WAS NOT DEVELOPED. THE SUBSEQUENT EXAMINATION OF THE ENGINE ASSEMBLY REVEALED A CRACK IN THE NUMBER THREE CYLINDER HEAD BETWEEN THE SPARK PLUGS. ACCORDING TO AN ENGINE OVERHAUL FACILITY, THESE TYPE CRACKS ARE COMMON IN THE OLD RADIAL TYPE ENGINES.
Probable Cause: WAS A CRACK IN NO.3 CYLINDER HEAD WHICH RESULTED IN THE LOSS OF ENGINE POWER.
Accident investigation:
 |
|
Sources:
NTSB ATL93LA157
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 16-Mar-2024 17:15 | ASN Update Bot | Added |
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