On June 26, 1975, a Beechcraft E18 (registration N791A) operated by Hamilton Aviation was involved in an aviation accident near Toledo-Express, United States of America during landing or approach. 2 people were killed. Investigators recorded the probable cause as: Powerplant failure following cylinder assembly failure. This summary draws on records from the Bureau of Aircraft Accidents Archives (B3A); 3 related events involving the same aircraft type or operator are linked below.
A cargo aircraft on a night flight experienced an engine failure, diverted to Toledo-Express Airport, and struck power cables on final approach, resulting in a crash and destruction of the aircraft; both occupants were killed.
Incident Overview
A cargo flight operating at night encountered technical problems during cruise. The copilot notified air traffic control of an engine failure. The crew received clearance to divert to Toledo-Express Airport for an emergency landing.
Final Approach and Crash
While on final approach, the aircraft struck power cables and subsequently crashed in flames. The aircraft was destroyed in the accident. Both occupants on board were killed.
Probable Cause and Contributing Factors
The official investigation determined that the probable cause of the accident was a powerplant failure following a cylinder assembly failure. Several contributing factors were identified: fatigue fracture; improper maintenance; an unapproved modification; oil exhaustion in the engine lubrication system; oil exhaustion in the propeller system; fatigue of the cylinder head; and a standpipe cut off flush with the bottom of the oil tank.