As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) OPERATOR REPORTED THAT APU FAILED TO START IN-FLIGHT ON 2 ATTEMPTS DURING DESCENT. FOLLOWING SUBSEQUENT FLIGHT LEG, THE CREW NOTICED FIRE DAMAGE TO THE TAILCONE AND APU INLET. A/C FERRIED TO SERVICE FACILITY FOR REPAIRS. TAILCONE TO BE REPLACED, APU REMOVED FOR INSPECTION/REPAIR.