As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) APU FAILED TO START. FUEL LEAK AND SMALL AMOUNT OF SMOKE DETECTED AT THE REAR OF THE AIRCRAFT. APU EXTINGUISHER ACTIVATED. APU STARTER REPLACED DUE TO HEAT DAMAGE. CURRENT LIMITERS REPLACED IN CARGO BAY P/N ANL-275. IGNITOR AND COMBUSTION CHAMGER CLEANED AND CHECKED SERVICEABLE. AIRCRAFT RETURNED TO SERVICE.