As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DEN - FLIGHT 4430 RETURNED TO THE GATE WITH A APU INLET DOOR CAUTION MESSAGE. MAINTENANCE PLACED ON MEL. AIRCRAFT RETURNED TO SERVICE. MEL CLEARED ON 11/19/2005 BY RIGGING THE APU DOOR IAW AMM 49-14-19-820-801-A01. OPERATIONAL CHECKS GOOD. AIRCRAFT RETURNED TO SERVICE. NO PARTS REPLACED.