On July 8, 1995, a Grumman G-164A (registration N8946H) was involved in an aviation accident near Burley, ID. Investigators recorded the probable cause as: The engine stopped because the rear throw of the crankshaft failed due to fatigue. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.
A Cessna aircraft experienced a sudden engine stoppage during an aerial application run, leading to a forced landing where the plane collided with rocks and nosed over due to crankshaft fatigue.
The pilot was conducting an aerial application flight when the engine suddenly stopped. During the subsequent forced landing roll, the aircraft collided with a pile of rocks and nosed over.
Mechanics disassembled the engine to determine the cause of the failure. Examination revealed that the rear throw of the crankshaft had failed due to fatigue.
The engine stopped because the rear throw of the crankshaft failed due to fatigue.