As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT NR 546 - DEN - UPON ARRIVAL, FLIGHT CREW REPORTED THE LANDING GEAR WARNING HORN SOUNDED WITH THROTTLES RETARDED TO IDLE AND FLAPS UP. WARNING HORN DID NOT SOUND AT FLAP SETTINGS 1 OR 5 WITH THROTTLES RETARDED TO IDLE. LANDING GEAR WAS UP IN BOTH CASES. MAINTENANCE PEFORMED LANDING GEAR WARNING TEST PER MM 31-26-0 AND FLAP SETTINGS 1 AND 5 CHECKED NORMAL. LUBED FLAP SWITCH AS PRECAUTIONARY. (M)