As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 6504 - IAD-LGA - DURING CLIMB, AIRCRAFT MADE A UNSCHEDULED LANDING DUE TO GEAR HANDLE RED UNSAFE INDICATION ILLUMINATED. AIRCRAFT RETURNED TO GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED ALL UPLOCK MICROSWITCHES AND PERFORMED GEAR SWING AND COULD NOT DUPLICATE. OPS CHECK OK. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (M)