Accident Overview
While in cruise flight over mountainous terrain, the pilot detected an odor described as a combination of "electrical smoke and fuel." Upon opening the canopy, flames emerged from beneath the instrument panel. The pilot then closed the canopy, and the fire subsided. The pilot did not reference or execute the aircraft's 'In-Flight Electrical Fires' checklist. Instead, he elected to attempt a forced landing on a ridge within a state forest. During the landing sequence, the airplane collided with trees and subsequently began leaking fuel.
Post-Accident Examination
An examination of the airframe revealed evidence of fire damage in the vicinity of the battery and the electrical wiring harness leading from the battery. The engine, its accessories, and the surrounding structure were free of fire damage. No other components outside the battery area showed evidence of thermal damage.
Maintenance History
The airplane's most recent annual inspection had been completed approximately six months before the accident. As part of that inspection, maintenance work was performed on the wiring supplying the cigar lighter and on the cables for the electric starter. No further details regarding the inspection or the specific work were provided.
Pilot Actions and Circumstances
The pilot reported that after detecting the smoke and fuel odor, he opened the canopy, which immediately coincided with the appearance of fire from under the instrument panel. Closing the canopy led to a reduction in the fire's intensity. The decision to attempt a landing on a ridge was made without consulting the checklist for in-flight electrical fires. The forced landing on the ridge culminated in the airplane striking trees and leaking fuel.