ASN Wikibase Occurrence # 360292
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| Date: | Sunday 19 June 1994 |
| Time: | 19:40 LT |
| Type: |  Mooney M20J |
| Owner/operator: | Private |
| Registration: | N201NK |
| MSN: | 24-0303 |
| Total airframe hrs: | 3428 hours |
| Engine model: | LYCOMING IO-360-A3B6D |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Big Bear, CA -
 United States of America
|
| Phase: | Initial climb |
| Nature: | Private |
| Departure airport: | (L35) |
| Santa Monica, CA | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
AFTER TAKEOFF, THE PILOT EXPERIENCED A LOSS OF ENGINE POWER AND DITCHED INTO A LAKE OFF THE DEPARTURE END OF THE RUNWAY. WITNESSES ON THE GROUND HEARD THE ENGINE MISSING AND OBSERVED SMOKE COMING FROM THE COWLING AREA. THE AIRCRAFT RECORDS INDICATE THAT THE MAGNETO WAS REPLACED WITH AN OVERHAULED UNIT 2 MONTHS PRIOR TO THE ACCIDENT. EXAMINATION OF THE MAGNETO FOUND THAT THE OIL SLINGER RING WAS LOOSE WHICH ALLOWED THE LUBRICATING OIL FROM THE CRANKCASE TO ENTER THE ELECTRICAL PORTION OF THE MAGNETO. THE SPARK PLUGS THEN FAILED TO FIRE PROPERLY RESULTING IN A RICH MIXTURE AND SUBSEQUENT SMOKE.
Probable Cause: a loss of engine power from a malfunctioning magneto due to a loose oil seal in an overhauled magneto.
Accident investigation:
 |
|
Sources:
NTSB LAX94LA260
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 15-Mar-2024 20:12 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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