On January 12, 1995, a Cessna S550 (registration N287MC) was involved in an aviation accident near Newton, IA. Investigators recorded the probable cause as: The captain's failure to maintain proper alignment during the final approach and landing phase, resulting in the left main landing gear striking a snowbank off the runway. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.
During an instrument landing system approach to runway 32, the captain attempted to correct from a right-side alignment but overcorrected, causing the left main gear to strike a snowbank and exit the runway.
The flight crew completed an instrument landing system (ILS) approach targeting runway 32. Upon final approach, the aircraft was positioned to the right of the runway centerline. The captain, acting as the flying pilot, initiated a correction maneuver to align the aircraft with the runway center.
During this correction attempt, the left main landing gear contacted a snowbank located on the left side of the runway. The impact caused the airplane to exit the paved surface.
The captain's failure to maintain proper alignment during the final approach and landing phase, resulting in the left main landing gear striking a snowbank off the runway.