ASN Wikibase Occurrence # 364001
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| Date: | Saturday 29 February 1992 |
| Time: | 11:30 LT |
| Type: |  Grumman G-164A Turbo Ag-Cat |
| Owner/operator: | Trinkle & Boys Agricultural |
| Registration: | N5408 |
| MSN: | 981 |
| Total airframe hrs: | 4058 hours |
| Engine model: | GARRETT TPE 331-43BL |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Vernalis, CA -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Agricultural |
| Departure airport: | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE AIRPLANE EXPERIENCED AN UNCONTAINED SEPARATION OF THE SECOND-STAGE STATOR TURBINE WHEEL WHILE EXECUTING AN AERIAL APPLICATION PROCEDURE TURN. THE AIRPLANE'S ALTITUDE WAS INSUFFICIENT FOR THE PILOT TO ALIGN IT WITH THE CULTIVATED FURROWS. THE LANDING WAS NORMAL BUT THE AIRPLANE NOSED OVER ONTO ITS BACK DURING THE LANDING ROLL WHEN THE WHEELS DUG INTO THE FURROWS. EXAMINATION OF THE ENGINE'S LOGBOOK DISCLOSED THAT THE OPERATOR HAD NOT PROPERLY COMPLIED WITH AIRWORTHINESS DIRECTIVE (AD) 86-08-06. THIS AD REQUIRES RADIOGRAPHIC INSPECTION OF THE SECOND-STAGE STATOR TURBINE WHEEL ASSEMBLY.
Probable Cause: THE OPERATOR'S FAILURE TO PROPERLY COMPLY WITH AN AIRWORTHINESS DIRECTIVE AFFECTING THE SECOND-STAGE TURBINE WHEEL ASSEMBLY. CONTRIBUTING TO THIS ACCIDENT WAS THE UNCONTAINED FAILURE OF THE SECOND-STAGE TURBINE WHEEL AND THE ROUGH/UNEVEN TERRAIN.
Accident investigation:
 |
|
Sources:
NTSB LAX92LA131
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 19-Mar-2024 08:21 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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