ASN Wikibase Occurrence # 66689
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| Date: | Tuesday 28 July 2009 |
| Time: | 11:00 |
| Type: |  Grumman G-164A Ag-Cat |
| Owner/operator: | Kenneys Crop Dusting Inc. |
| Registration: | N8741H |
| MSN: | 1508 |
| Total airframe hrs: | 9280 hours |
| Engine model: | Pratt & Whitney R-1340 |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Riverdale, California -
 United States of America
|
| Phase: | En route |
| Nature: | Agricultural |
| Departure airport: | Rasin City, CA |
| Riverdale, CA | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
During a spray pass the pilot detected a "hot smell," which prompted him to pull up out of the field to check his engine gauges. As everything appeared normal the pilot returned to the field to continue spraying operations. Upon re-entering the field the pilot reported that "…the engine changed sound." After pulling up out of the field a second time the pilot revealed that the engine began to slow down, followed by the emission of smoke from the exhaust system. The pilot made a successful forced landing in the field he was spraying; however, due to the wet field conditions it nosed over on its back, which resulted in substantial damage to the airplane. A post accident teardown examination revealed that the engine had failed as a result of a supercharger-blower failure. It also revealed that foreign object material was detected in the engine; however, it could not be determined if this was causal to the engine failure. The manufacturer recommends an overhaul time of between 600 to 1,000 hours for engines operated in aerial application operations. At the time of the accident the engine had accumulated a total of 835.27 hours since its most recent major overhaul.
Probable Cause: The partial loss of engine power due to the failure of the engine's supercharger-blower.
Accident investigation:
 |
|
Sources:
NTSB
History of this aircraft
Other occurrences involving this aircraft
| 24 November 1986 | N8741H | Kenny's Crop Dusting, Inc. | 0 | Fresno, CA | |
sub |
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 29-Jul-2009 07:07 | slowkid | Added |
| 21-Dec-2016 19:25 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 02-Dec-2017 15:50 | ASN Update Bot | Updated [Operator, Other fatalities, Departure airport, Destination airport, Source, Narrative] |
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