What happened
During an instrument cross-country flight departing from Columbus, Ohio, the pilot of a Cessna (registration not provided) declared an emergency. Upon receiving a heading to the nearest airport from approach control, the pilot reported a total loss of engine power and indicated that the intended airport could not be reached.
A passenger reported that the engine stopped and the pilot attempted a restart. The pilot instructed passengers to brace for impact with trees. The aircraft subsequently collided with trees and came to rest in a heavily wooded area. There were no fatalities reported.
The investigation
An examination of the internal engine case revealed scoring damage, while the pistons and connecting rods showed evidence of heat distress. Investigators recovered metal debris from the oil sump. Of the 12-quart engine oil system, only approximately half a quart of oil was recovered. The nose section and engine compartment of the aircraft sustained fire damage.
A line mechanic at the departure airport reported that during the servicing of a gear strut, an oil leak was observed coming from under the engine cowling onto the nose wheel pant. This leak had been pointed out to the pilot, who stated he would investigate the issue at a later time.
Findings
- The engine suffered from significant oil loss, with only half a quart remaining in the 12-quart system.
- Internal engine components showed signs of heat distress and scoring.
- Unaddressed oil leakage was noted by maintenance personnel prior to departure.