ASN Wikibase Occurrence # 40941
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| Date: | Monday 5 May 1997 |
| Time: | 18:00 LT |
| Type: |  Grumman G-164A Ag-Cat |
| Owner/operator: | Joseph F. Dion |
| Registration: | N7926 |
| MSN: | 812 |
| Year of manufacture: | 1971 |
| Total airframe hrs: | 9063 hours |
| Engine model: | P&W R-1340-AN1 |
| Fatalities: | Fatalities: 1 / Occupants: 1 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Rosalia, WA -
 United States of America
|
| Phase: | En route |
| Nature: | Agricultural |
| Departure airport: | , WA (72S) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot-in-command departed the airport in a Grumman G-164A spray plane. En route to the destination field, and while overflying hilly terrain, the aircraft's tail wheel impacted the ground, followed by the main gear. The aircraft continued over an embankment, nosing over while crossing a paved road, before coming to rest and burning. There was no evidence that the pilot jettisoned the 2,040 pound herbicide load. Propeller slash marks early in the ground track indicated high engine RPM at the initial ground impact. Additionally, toxicological evaluation of samples from the pilot-in-command revealed 0.002 ug/ml of Tetrahydrocannabinol detected in blood, 0.08 ug/ml of Tetrahydrocannabinol Carboxylic Acid detected in blood, and 0.035 ug/ml of Tetrahydrocannabinol Carboxylic Acid detected in urine indicating fairly recent (within several hours) use of Marihuana.
Probable Cause: The pilot-in-command's failure to maintain clearance with terrain. Factors contributing to the accident were, hilly terrain conditions and impairment due to recent use of marihuana.
Accident investigation:
 |
|
Sources:
NTSB SEA97LA099
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-Oct-2008 10:30 | ASN archive | Added |
| 21-Dec-2016 19:23 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 08-Apr-2024 15:38 | ASN Update Bot | Updated [Time, Operator, Other fatalities, Departure airport, Source, Narrative, Category, Accident report] |
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