ASN Wikibase Occurrence # 284695
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| Date: | Tuesday 26 June 2007 |
| Time: | 18:30 LT |
| Type: |  Piper PA-12 |
| Owner/operator: | Private |
| Registration: | N78456 |
| MSN: | 12-1965 |
| Year of manufacture: | 1947 |
| Total airframe hrs: | 4149 hours |
| Engine model: | Lycoming O-320-A2B |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Anchorage, Alaska -
 United States of America
|
| Phase: | Unknown |
| Nature: | Private |
| Departure airport: | Anchorage-Merrill Field, AK (MRI/PAMR) |
| Deshka River, AK | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The private certificated pilot was conducting a personal local flight under Title 14, CFR Part 91, when the accident occurred. The pilot said that during cruise flight the engine started to run rough. He was unable to get the engine to run smoothly, and elected to make a precautionary landing on a grass-covered field. He said the grass was knee to waist high, and the airplane nosed over during the landing roll. The pilot indicated that the wings and rudder were damaged when the airplane nosed over. An aircraft mechanic who examined the airplane after recovery said that during a test run of the engine, the engine appeared to have a malfunctioning magneto. The magneto was sent to a shop for examination, and the technician who examined the magneto, said the upper housing had fractured, allowing the wire-lugs to float internally, and the engine to run rough. He said the damage to the magneto did not appear to be the result of the accident, and that the failure of the upper housing was not uncommon in older airplanes.
Probable Cause: The malfunction of an engine magneto during cruise flight, which resulted in a partial loss of engine power, and an on-ground encounter with terrain. A factor associated with the accident was the high vegetation at the off-airport landing site.
Accident investigation:
 |
|
Sources:
NTSB ANC07LA056
History of this aircraft
Other occurrences involving this aircraft
| 5 June 1999 | N78456 | Private | 0 | Anchorage, AK | |
sub |
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 01-Oct-2022 06:16 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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