ASN Wikibase Occurrence # 359211
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| Date: | Thursday 23 March 1995 |
| Time: | 09:15 LT |
| Type: |  Aero Commander S2R |
| Owner/operator: | Private |
| Registration: | N5561X |
| MSN: | 1761R |
| Engine model: | P&W R-1340-A |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Gillett, AR -
 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 |
DURING AN AERIAL APPLICATION PASS THE ENGINE OIL PRESSURE DROPPED TO 40 PSI AND THE ENGINE LOST ALL POWER. THE AIRPLANE SLID INTO TREES DURING THE FORCED LANDING. AN ENGINE TEARDOWN REVEALED THAT THE ENGINE OIL PASSAGES WERE BLOCKED BY PIECES OF METAL WORN FROM THE MAIN ROD BEARING WHICH WAS SEIZED TO THE CRANKSHAFT. GEAR SPLINES WERE SEPARATED FROM THE CAM GEAR AND CAM GEAR DRIVE. THE CONDITION WAS DESCRIBED AS 'TYPICAL OF A HIGH TIME BEARING FAILURE.' THE ENGINE HAD 1,549 HOURS SINCE OVERHAUL. TBO WAS 1,200 HOURS.
Probable Cause: THE ENGINE MAIN ROD BEARING SEIZED TO THE CRANKSHAFT DUE TO WORN MASTER ROD METAL PIECES BLOCKING THE OIL PASSAGES. A FACTOR WAS AN ENGINE OVERHAUL WAS NOT PERFORMED BY COMPANY MAINTENANCE PERSONNEL.
Accident investigation:
 |
|
Sources:
NTSB FTW95LA145
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 15-Mar-2024 08:09 | ASN Update Bot | Added |
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