On August 11, 1992, a Grumman-schweizer G-164B (registration N48672) operated by Mitchell, Larry D. was involved in an aviation accident near Atkinson, NE. Investigators recorded the probable cause as: A CRACKED ENGINE CYLINDER. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.
A pilot experienced engine roughness shortly after takeoff. Attempting to isolate an ignition issue, he moved the magneto switch, causing power loss. Post-accident inspection revealed a cracked cylinder.
Incident Description
Shortly after takeoff, the pilot reported that the engine began to run rough. Believing the problem to be related to the ignition system, he attempted to verify and isolate the issue. During this process, when the magneto switch was moved from the BOTH to the LEFT position, the engine lost power completely.
Pilot Actions
The pilot made several attempts to restart the engine, but they were unsuccessful. Consequently, he executed a forced landing in a corn field.
Post-Accident Examination
An examination of the aircraft after the accident revealed a cracked cylinder installed at the number 9 position. No evidence of other pre-impact malfunctions was found.