As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ETOPS SIGNIFICANT SYS - APU SHUTDOWN DURING PUSHBACK. RETURNED TO GATE. T/S IAW FIM 49-11-00 FIG 1110. FOUND DEBRIS BUILDUP ON INLET OF OILER COOLER. REMOVED DEBRIS IAW LETTER DATED 7-5-09. CHECK APU OPS. CHECKS OK. NO FURTHER FAULTS NOTED.