As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) AT CRUISE APU FIRE HANDLE ILLUMINATED AND AUDIBLE FIRE WARNING BELL. FIRE WARNING DRILL AND FIRE WARNING HANDLE WAS PULLED AND FIRE BOTTLE DISCHARGED.ATC ADVISED AND A/C LANDED SAFELY. APU AREA CLEANED AND INSPECTED. APU DMIDAND FLOWN FOR REPAIRS. APU FIRE BOTLE AND SQUIB REPLACED. FIRE LOOP PLUG FOUND FAULTY. PLUG REPAIRED AND APU GROUND RUN SERVICEABLE.