Incident
During taxi operations for departure, the engine unexpectedly ceased operation. The pilot initiated a restart procedure. While attempting to restart, smoke emanated from the engine compartment. Shortly thereafter, flames emerged. The pilot and a passenger evacuated the aircraft as the fire completely engulfed it.
Investigation
Post-accident examination of the aircraft revealed that the nipple attached to the pressure side of the fuel pump, which connects to the carburetor intake line, was bent. A crack was identified within the threaded area of that nipple. The airplane had undergone an inspection 14 flight hours prior to the occurrence.
Post-Crash Findings
The fuel system component, specifically the nipple on the fuel pump outlet, was found to be deformed and contained a crack in its threaded portion. This nipple serves as a conduit from the fuel pump to the carburetor. The aircraft was destroyed by fire.