ASN Wikibase Occurrence # 354792
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Date: | Thursday 19 February 1998 |
Time: | 11:00 LT |
Type: | Grumman G-164B Ag-Cat |
Owner/operator: | Private |
Registration: | N48493 |
MSN: | 49B |
Total airframe hrs: | 3388 hours |
Engine model: | P&W R-985 |
Fatalities: | Fatalities: 0 / Occupants: 1 |
Aircraft damage: | Substantial |
Category: | Accident |
Location: | Stanwood, WA -
United States of America
|
Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
Nature: | Agricultural |
Departure airport: | Burlington, WA (75S) |
Destination airport: | |
Investigating agency: | NTSB |
Confidence Rating: | Accident investigation report completed and information captured |
Narrative:The pilot reported that while engaged in aerial spraying, approximately 30 minutes after takeoff and 15 minutes after beginning to spray, he noted a reduction in engine power. He advanced the throttle, at which point the engine 'sputtered' and 'popped' a few times and then quit. The pilot performed a forced landing into a field. The airplane encountered soft terrain during the forced landing roll and flipped over. The pilot stated he did not use carburetor heat at the time. Post-accident examination of the engine did not reveal any abnormalities, and the operator successfully test-ran the engine following the accident. Temperatures of 7 to 9 degrees C and dewpoint of 6 degrees C were reported at two nearby weather reporting stations during the accident time frame. This temperature/dewpoint combination represents a hazard of 'serious [carburetor] icing at cruise power', according to FAA data.
Probable Cause: The pilot's failure to apply carburetor heat. Factors included carburetor icing conditions and soft terrain in the forced landing area.
Accident investigation:
|
| |
Investigating agency: | NTSB |
Report number: | SEA98LA038 |
Status: | Investigation completed |
Duration: | 2 years and 12 months |
Download report: | Final report |
|
Sources:
NTSB SEA98LA038
Location
Revision history:
Date/time | Contributor | Updates |
11-Mar-2024 18:24 |
ASN Update Bot |
Added |
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