ASN Wikibase Occurrence # 287565
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| Date: | Thursday 19 July 2012 |
| Time: | 19:00 LT |
| Type: |  Grumman G-164A |
| Owner/operator: | West Central Ag-air Inc |
| Registration: | N4638 |
| MSN: | 1071 |
| Year of manufacture: | 1973 |
| Total airframe hrs: | 9012 hours |
| Engine model: | P&W R1340 SERIES |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Fergus Falls, Minnesota -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Agricultural |
| Departure airport: | Wheaton Municipal Airport, MN (KETH) |
| Dumont, MN | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot was spraying a large corn field when he saw a puff of white smoke come from the engine. He turned toward a road, but about half way through the turn, the engine lost all power. The pilot jettisoned the chemical load and landed in the corn field. Examination of the radial engine revealed the No. 2 cylinder head was cracked. A review of the maintenance logbooks revealed that a mandatory Federal Aviation Administration Airworthiness Directive that required a 100-hour visual inspection to prevent cylinder head cracking, had been complied with at the last annual inspection, but no entries were made that any cracks were observed.
Probable Cause: A total loss of engine power due to a cracked No. 2 cylinder head.
Accident investigation:
 |
|
Sources:
NTSB CEN12LA491
History of this aircraft
Other occurrences involving this aircraft
| 1 July 1984 | N4638 | Thompson Aerial | 0 | Wyndmere, ND | |
sub |
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 04-Oct-2022 12:11 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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