As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RECEIVED A LAV SMOKE WARNING DURING TAXI. ON CALL MX INSPECTED AND FOUND NO EVIDENCE OF SMOKE OR FIRE AND COMPLIED WITH MEL PROCEDURES. MAINTENANCE FOUND APU COMBUSTION SEAL BLOWN AND PLACED THE APU ON MEL 10/17/04. MAINTENANCE REMOVED AND REPLACED THE APU.