As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THIS AIRCRAFT ENGINE HAS EXPERIENCED TWO FIRES. BOTH OF WHICH WERE CARBURETOR FAILURE. THIS WAS CAUSED BY A SPLIT FLOAT THAT A PREVIOUS AD SHOULD HAVE SOLVED. THE NEW FLOAT SPLIT AND THE FLOAT FILLED WITH FUEL THIS CAUSED THE ENGINE TO QUIT. THE AIRCRAFT WAS BEING USED AS A INSTRUCTIONAL FLIGHT WITH TWO PILOTS ON BOARD. AT RESTART PROCEDURES WERE BEING CONDUCTED ON THE ACTIVE RUNWAY THE AIRCRAFT CAUGHT FIRE. (SO03200402575)