As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 6207 - IAD-MHT - DURING CLIMB, AN UNSCHEDULED LANDING DUE TO RED WARNING LIGHT IN HANDLE REMAINED ON WITH GEAR UP. AIRCRAFT RETURNED TO GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED AND REMOVED AND REPLACED RIGHT UPLOCK MICROSWITCH, OPS CHECK OK. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (M)