On February 23, 1994, a Cessna T210R (registration N7793U) was involved in an aviation accident near Baxley, GA. Investigators recorded the probable cause as: The crankshaft internal oil tube at the number two journal was damaged, restricting the normal flow of engine oil to the connecting rod bearing. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.
During the first hour of an installation break-in procedure, the engine quit, forcing a landing on a county road. Examination revealed a hole in the engine case and a crankshaft oil tube defect that restricted oil flow to a connecting rod bearing.
Accident Overview
According to the pilot and mechanic, the engine quit during the first hour of the installation break-in procedure. A forced landing was accomplished on a county road.
Engine Examination
Initial examination of the engine revealed a hole in the top of the engine case. A subsequent teardown examination disclosed that the crankshaft internal oil tube at the number two journal was damaged. This damage restricted the normal flow of engine oil to the connecting rod bearing.
Crankshaft Overhaul Background
The engine assembly was overhauled at an approved FAA repair station. During the crankshaft overhaul grinding process, all oil tubes are removed from the assembly.
Probable cause
The crankshaft internal oil tube at the number two journal was damaged, restricting the normal flow of engine oil to the connecting rod bearing.