As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU FAULT WILL NOT START. LAST 5 STARTS APUC SHOWED START ABORT, 11% N1, BATTERY VOLTAGE DURING CRANK WAS 22 VOLTS DURING MX START ATTEMPT. APU DOOR NOT DISPLAYED. APU, REPLACED STARTER & STARTER CLUTCH ASSEMBLY, OPERATIONAL CHECKED GOOD.