As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MQT - FLT 4331 - DURING APU START THE APU HUNG AT 25 PERCENT GROUND CREW NOTICED FIRE AT APU. MAINTENANCE FOUND THE PROBLEM TO BE THE FADEC. THE FADEC WAS REMOVED AND REPLACED IAW EMB MM ALONG WITH A WIRING HARNESS AND FUEL DRAIN LINE. OPERATIONAL AND LEAK CHECKS WERE GOOD AND AIRCRAFT WAS RETURNED TO SERVICE. (M)