As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RTB, DUE TO APU DOOR STATUS MESSAGE LOCKED DOOR OPEN PER MEL 49-15-01B. RECONNECTED APU INLET DOOR ACTUATOR CONNECTOR AND PUT ACFT IN NORMAL CONFIG. OPERATED APU START/STOP THRU SEVERAL CYCLES W/NO DEFECTS. APU OPS NML, MCO AND PLACARD REMOVED.