NTSB Identification: NYC00LA125.
The docket is stored in the Docket Management System (DMS). Please contact Records Management Division
Accident occurred Sunday, April 30, 2000 in NASSAWADOX, VA
Probable Cause Approval Date: 05/08/2001
Aircraft: Beech A36, registration: N28JP
Injuries: 4 Serious.

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

Approximately 50 minutes after departure, during a cross-country flight, the airplane's engine began to run rough. The pilot noticed the oil pressure had decreased, he heard a loud 'bang', and the engine experienced a total loss of engine power. He was unable to maintain the airplane's altitude, and performed a forced landing to a field. Examination of the #2 piston revealed a hole from detonation on the side of the piston, which extended into the interior. Advisory Circular AC65-12A stated that detonation can burn a hole completely through a piston. Examination of the crankshaft revealed a lack of lubrication and severe overheating. The #5 and #6 connected rods had separated from the crankshaft, and their bearings were completely disintegrated.

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

A loss of engine power caused by detonation of the #2 piston.

Full narrative available

Index for Apr2000 | Index of months