ASN Wikibase Occurrence # 383477
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| Date: | Friday 27 August 1982 |
| Time: | 15:30 LT |
| Type: |  Grumman G-164C Ag-Cat |
| Owner/operator: | Private |
| Registration: | N6787K |
| MSN: | 156781 |
| Total airframe hrs: | 1009 hours |
| Engine model: | WRIGHT R-1820-71 |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Gunnison, MS -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Agricultural |
| Departure airport: | Gunnison, MS |
| Gunnison, MS | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE PILOT REPORTED THAT HE SMELLED SOMETHING HOT WHILE SPRAYING. HE CHECKED THE INSTRUMENTS AND NOTED THAT THE OIL TEMPERATURE GAUGE WAS INDICATING OFF THE HIGH SIDE OF THE SCALE. HE STARTED TO MAKE A PRECAUTIONARY LANDING BUT THE ENGINE SEIZED DURING FINAL APPROACH. A FORCED LANDING WAS MADE IN A FRESHLY PLOWED FIELD WHERE THE PLANE NOSED OVER. A TEARDOWN OF THE ENGINE REVEALED THAT A MASTER ROD SPACER, PN 117547, HAD FAILED. WITHOUT THIS SPACER THE MASTER ROD WOULD NOT BE PROPERLY LUBRICATED, AND REPORTEDLY, THE ENGINE COULD SEIZE. FURTHER INVESTIGATION REVEALED THAT THE ENGINE HAD BEEN OVERHAULED 93 HRS PRIOR TO THE ACCIDENT. FOLLOWING THE OVERHAUL, THE ENGINE HAD A PROBLEM LEAKING OIL PAST THE VALVES, SO IT WAS TAKEN BACK TO THE OVERHAUL FACILITY. SEVEN CYLINDERS WERE REMOVED AND REWORKED. THE ACCIDENT OCCURRED FOLLOWING A BRIEF BREAK-IN PERIOD AFTER THAT.
Probable Cause:
Accident investigation:
 |
|
Sources:
NTSB ATL82DA252
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 03-Apr-2024 01:04 | ASN Update Bot | Added |
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