ASN Wikibase Occurrence # 385450
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| Date: | Saturday 11 August 2001 |
| Time: | 07:20 LT |
| Type: |  Grumman G-164B Ag-Cat |
| Owner/operator: | Private |
| Registration: | N6774Q |
| MSN: | 284B |
| Total airframe hrs: | 6000 hours |
| Engine model: | P&W R-1340 |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Quincy, WA -
 United States of America
|
| Phase: | Take off |
| Nature: | Agricultural |
| Departure airport: | Quincy, WA |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
Just as the "Agcat" spray plane broke ground, the engine bogged down and an oil spray appeared on the windscreen. The pilot dumped the chemical load and continued straight ahead executing a forced landing in an agricultural field during which the aircraft nosed over. Post-accident examination of the engine revealed substantial metal in the oil filter and on the magnetic sump chip detector. Further examination revealed substantial rubbing and abrasion damage to the engine impeller. The impeller and associated collector case were examined by the Engineering Branch Laboratory of the Canadian Transportation Safety Board. The examination of the impeller and case revealed no signs of any progressive failure mechanism and the degree of damage was to such an extent as to prevent a conclusive determination of the initiating event.
Probable Cause: The failure of the impeller assembly as a consequence of impeller rub and binding within the impeller collector case for undetermined reasons.
Accident investigation:
 |
|
Sources:
NTSB SEA01LA149
History of this aircraft
Other occurrences involving this aircraft
| 19 August 1990 | N6774Q | Valley Cropduster, Inc. | 0 | Westley, CA | |
w/o |
| 18 February 2010 | N6774Q | Tlc Flying Inc | 0 | Near Colfax Airstrip, WA | |
sub |
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 04-Apr-2024 18:46 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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