ASN Wikibase Occurrence # 174792
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| Date: | Thursday 12 February 2004 |
| Time: | 16:30 |
| Type: |  Cessna 152 |
| Owner/operator: | Alta Aircraft Maintenance Inc. |
| Registration: | N66952 |
| MSN: | 15281687 |
| Year of manufacture: | 1978 |
| Total airframe hrs: | 8282 hours |
| Engine model: | Lycoming O-235-L2C |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | West Jordan, UT -
 United States of America
|
| Phase: | Landing |
| Nature: | Training |
| Departure airport: | West Jordan, UT (U42) |
| West Jordan, UT (U42) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
According to the instructor, they were practicing ground maneuvers at approximately 6,000 feet msl when the engine began to "run rough." The instructor said they were unable to maintain altitude, and while returning to the airport the "engine quit." The instructor made a forced landing in a snow-covered field. During the landing, the airplane's nose landing gear caught the snow and the airplane nosed over. The airplane's nose landing gear was displaced aft, buckling the firewall. The empennage was buckled just aft of the rear window, and the vertical stabilizer was crushed. The instructor said the field was covered with over a foot of snow. An examination of the airplane's engine revealed a hole in the number 1 piston, and a fractured exhaust valve for the number 1 cylinder.
Probable Cause: the failure of the exhaust valve for the engine's number one cylinder, resulting in the exhaust valve/piston contact and the subsequent total loss of engine power. Contributing factors include the lack of suitable terrain for a forced landing and the snow covered field.
Accident investigation:
 |
|
Sources:
NTSB: https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20040220X00208&key=1
History of this aircraft
Other occurrences involving this aircraft
| 3 April 1985 | N66952 | Al Alder | 0 | West Jordan, UT | |
sub |
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 23-Mar-2015 18:50 | Noro | Added |
| 21-Dec-2016 19:30 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 07-Dec-2017 17:43 | ASN Update Bot | Updated [Operator, Other fatalities, Nature, Departure airport, Destination airport, Source, Narrative] |
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