ASN Wikibase Occurrence # 133781
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| Date: | Sunday 28 December 1997 |
| Time: | 13:25 LT |
| Type: |  Mooney M20F |
| Owner/operator: | Randy Lee Johnson |
| Registration: | N9717M |
| MSN: | 670277 |
| Total airframe hrs: | 3750 hours |
| Engine model: | Lycoming IO-360-A1A |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Ferncliff, VA -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Wakefield, VA (KAKQ) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The airplane was in cruise flight at 10,500 feet when the engine began to run rough. The pilot said after 30 seconds the engine seized and would not turn over. The airplane was 4 miles east of an airport at the time of the power loss, however, the pilot chose to turn towards an airport 20 miles to the north because it appeared on the 'Nearest Airport' display of the Loran equipment on board the airplane. The pilot determined he would not reach the intended airport and performed a forced landing to a field. Removal of the engine cowling revealed an oil soaked engine compartment and that 2 quarts of oil remained in the sump. The oil temperature probe was free of the engine case; attached only to the electrical lead. The threaded portion of the probe and its corresponding attachment point on the engine were undamaged. The probe's copper 'crush' washer displayed evidence of compression, however, no evidence of safety wire was found on the probe or the engine case. The engine was overhauled 30 days and 10 flight hours prior to the accident. The oil temperature probe was an airframe item that was removed and reinstalled after the engine overhaul.
Probable Cause: the improper installation of the engine oil temperature probe which resulted in oil starvation and a total loss of engine power. A factor in the accident was the pilot's overflight of available airports in an effort to reach the 'Nearest Airport' displayed on his loran equipment during the subsequent forced landing.
Accident investigation:
 |
|
Sources:
NTSB NYC98LA056
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 21-Dec-2016 19:26 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 08-Apr-2024 11:16 | ASN Update Bot | Updated [Time, Other fatalities, Departure airport, Source, Narrative, Category, Accident report] |
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