As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING PUSHBACK AFT SMOKE DETECTORS WENT OFF WITH A SLIGHT ODOR OF SMOKE IN CABIN. FOUND SMALL AMT OF SYDROL STAINS IN APU INLET CLEANED SAME PERFORMED OPN 5090 ALT DUCT BURNOUT AND PERF OP 7804 WATER BAG REPLACED. RAN A/C SYSTEMS NO ODORS OR SMOKE PRESENT OK FOR SVC