ASN Wikibase Occurrence # 380305
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| Date: | Tuesday 27 December 1983 |
| Time: | 23:10 LT |
| Type: |  Lake LA-4-200 |
| Owner/operator: | Private |
| Registration: | N39451 |
| MSN: | 541 |
| Total airframe hrs: | 1075 hours |
| Engine model: | Lycoming IO-360-A1B |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Great Falls, MT -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Missoula, MT (KMSO) |
| Miles City, MT (KMLS) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE ACFT WAS DAMAGED IN A FORCED LANDING ON A HIGHWAY AFTER THE ENGINE SEIZED. THE PLT SAID 'THE ENGINE MADE UNUSUAL SOUNDS OF AN ENGINE RUNNING BAD.' THEN IT LOST COMPRESSION AND SEIZED. HE MADE A FORCED LANDING ON A HIGHWAY AND DAMAGEDTHE HULL. EXAMINATION OF THE ACFT REVEALED A SITUATION WHERE THE MAIN OIL BREATHER FROZE PREVENTING OIL VAPOR PRESSURE FROM VENTING; CAUSING THE ENGINE SEALS TO FAIL AND THEREBY DEPLETNG THE OIL SUPPLY.
Probable Cause:
Accident investigation:
 |
|
Sources:
NTSB DEN84LA052
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 01-Apr-2024 15:08 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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