On August 2, 1992, an Aeronca 7AC (registration N84228) operated by Stuart Flying Club was involved in an aviation accident near Whitman, NE. Investigators recorded the probable cause as: The partial loss of engine power due to fuel contamination and weak ignition, which necessitated a forced landing that resulted in main gear collapse. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.
A pilot executed a forced landing after experiencing partial engine power loss. The aircraft collapsed its main gear upon touchdown due to fuel contamination and weak ignition.
What happened
The pilot reported experiencing a partial loss of engine power during flight. In response to the mechanical issue, the pilot initiated a forced landing approach toward an area characterized by uneven terrain. As the aircraft neared the ground, just before touchdown, the pilot applied full left rudder control to steer the airplane away from a rising slope in the immediate vicinity.
The aircraft subsequently landed while banked. The impact forces caused the main landing gear to collapse upon contact with the ground.
The investigation
Post-accident examination of the airplane revealed significant mechanical issues contributing to the power loss. Inspectors found evidence of fuel contamination within the engine system. Additionally, the inspection identified weak ignition conditions as a factor in the engine's performance degradation.
Probable cause
The partial loss of engine power due to fuel contamination and weak ignition, which necessitated a forced landing that resulted in main gear collapse.