ASN Wikibase Occurrence # 230933
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| Date: | Wednesday 29 August 2018 |
| Time: | 11:30 |
| Type: |  Grumman G-164A Ag-Cat |
| Owner/operator: | Private |
| Registration: | N956X |
| MSN: | 507 |
| Year of manufacture: | 1968 |
| Total airframe hrs: | 12058 hours |
| Engine model: | Pratt & Whitney R985-14B |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Opelousas, LA -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Private |
| Departure airport: | Church Point, LA (6LA5) |
| Church Point, LA (6LA5) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The private pilot was practicing crop-dusting maneuvers when the engine lost total power; he performed a forced landing in an open, muddy field. The airplane nosed over and sustained substantial damage. Postaccident examination of the engine revealed that two of three bolts that secured the left magneto had come loose and were missing. The safety wire was broken, and the Sims coupling was heavily damaged. The magneto could easily be moved around, which disrupted the spark timing and resulted in a total loss of power.
Probable Cause: The loss of two securing bolts that allowed the left magneto to move around, which disrupted the spark timing and resulted in the engine losing total power.
Accident investigation:
 |
|
Sources:
NTSB
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 27-Nov-2019 07:16 | ASN Update Bot | Added |
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