As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IN CLIMB, THE APU OVERSPEED LIGHT CAME ON, APU " AUTO SHUTDOWN". QRH FOLLOWED. REMOVED AND REPLACED APU ECU PER AMM 49-61-12. KK N4629. REMOVED AND REPLACED APU FUEL FLOW DIVIDER SOLENOID VALVE PER AMM 49-31-15. SP B8697. GROUND OPS & LEAK CHECKS GOOD. AIRCRAFT RETURN TO SERVICE. ROTABLE PARTS CHANGE WAS INDICATED - TT # 1473950 S/N OFF 01279 UNIT, ELECTRONI OFF 29-4961-9-0002 1279 ON 29-4961-9-0002 0564.