On April 15, 1997, a Cessna 177 (registration N3322T) was involved in an aviation accident near Harrisburg, IL. Investigators recorded the probable cause as: the loss of engine power followed by an engine fire for reason or reasons undetermined. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.
During takeoff, the engine failed to develop full power. The pilot aborted and exited the aircraft after noticing smoke. The airplane burned until destroyed; investigation could not determine the fire source.
Summary
During the initial application of power for takeoff, the engine did not develop full power. The pilot reduced the power to idle and turned off the runway, at which point he became aware of smoke coming from the engine compartment. The pilot and one passenger exited the airplane, which was subsequently found to be on fire. The airplane continued to burn until it was destroyed.
Examination
A subsequent examination of the engine and airframe failed to reveal the source of the fire or ignition source. There was aviation fuel to support the fire once the airplane started to burn.