On August 21, 1991, a Beech B24R (registration N2528W) operated by John G. Purdy was involved in an aviation accident near Shady Cove, OR. Investigators recorded the probable cause as: An oil line that had been removed for maintenance was loose, and oil had been pumped overboard. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.
A Beech B24R experienced an engine seizure shortly after takeoff for an annual inspection return flight. The pilot performed a wheels-up landing on uneven grass, damaging the aircraft. Investigation found a loose oil line from maintenance caused oil loss.
Incident Overview
On the first flight following an annual inspection, the pilot of a Beech B24R was returning the aircraft to its home base. Shortly after departure, the pilot noted that the engine was not developing normal RPM and decided to return to the maintenance facility. However, the engine soon seized. The pilot executed a wheels-up landing on uneven grassy terrain, resulting in damage to the aircraft.
Investigation Findings
An investigation into the incident revealed that an oil line, which had been removed for maintenance, was loose. This allowed engine oil to be pumped overboard, leading to a loss of lubrication and subsequent engine seizure.
Outcome
The aircraft sustained damage during the forced landing. No injuries were reported.
Probable cause
An oil line that had been removed for maintenance was loose, and oil had been pumped overboard.