As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU BLEED JUST SHUT ITSELF OFF AFTER SEVERAL MINUTES OF NORMAL OPERATION. DUE TO RECENT APU BLEED HISTORY, ACCOMPLISH SERVICE TIP. IF NO FAULTS FOUND REPLACE K10645 (562-0439). CONSULT ON-LINE IPC TO VERIFY PARTS LIST CURRENCY. ACP'D SERVICE TIP 36-11-00 P500A AND NO FAULT NOTED AFTER 30 MINUTES APU RUNNING. REPLACED K10645 ON P36. RAN PACKS AND MOTORED ENGINE WITH APU BLEED SHUTOFF VALVE OPERATING OKAY.