As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 6485 - IAD-JFK - DURING CLIMB, AN UNSCHEDULED LANDING AT IAD DUE TO GEAR HANDLE RED LIGHT WOULD NOT EXTINGUISH. MAINTENANCE REMOVED AND REPLACED MAIN GEAR UPLOCK SWITCH. OPS CHECK OK. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (M)