As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU FAILED TO START AT FL 340 TWO TIMES AND FL 300 ONE TIME WITH FAULT LIGHT ON ALL THREE STARTS. THIS IS A CSS START ATTEMPT. GROUNDED - YES. ACCOMP APU BITE 49-60 TASK 801. CURRENT STATUS SHOWS NO FAULTS FOUND HOWEVER NUMEROUS FCU FAULTS RECORDED ON FAULT HISTORY & MAINT. HISTORY PAGES. REPLACED APU FCU LK & OPS NORMAL REF M/M 49-31-11. APU BITE HAS NO FAULTS FOUND. GRND VERIFICATION IS GOOD.