As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 6508 - IAD-BOS - DURING TAKEOFF, MADE AN UNSCHEDULED LANDING DUE TO WHEN GEAR WAS RETRACTED, GEAR HANDLE RED LIGHT CAME ON, RECYCLED GEAR NO FIX. AIRCRAFT RETURNED TO GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED AND REMOVED AND REPLACED UPLOCK MICROSWITCH. OPS CHECK OK. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (M)