NTSB Identification: CHI95LA139.
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Accident occurred Sunday, April 30, 1995 in KIRKSVILLE, MO
Probable Cause Approval Date: 09/24/1995
Aircraft: MOONEY M20J, registration: N4145H
Injuries: 2 Minor,2 Uninjured.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

SHORTLY AFTER TAKEOFF, AS THE AIRPLANE REACHED ITS ASSIGNED CRUISE ALTITUDE, THE AIRPLANE'S ENGINE LOST TOTAL POWER. THE PILOT MADE A FORCED LANDING IN A FIELD AND DURING THE ROLLOUT COLLIDED WITH A TREE AND DITCH. POSTACCIDENT EXAMINATION OF THE ENGINE REVEALED THAT FIVE OF SIX HYDRAULIC TAPPET BODY HEADS WERE SEPARATED FROM THE TAPPET BODY. THE TAPPET HEADS WERE FOUND THROUGHOUT THE ENGINE CASE. THE REASON FOR THE TAPPET BODY HEAD FAILURES WAS NOT DETERMINED.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

the loss of engine power due to failure of the engine's hydraulic tappet body heads. Related factors in the accident were the restricted visual lookout, and the unsuitable terrain encountered during the forced landing.

Full narrative available

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