As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 6222 - JFK-IAD - DURING CLIMB-OUT, RETURNED TO IAD DUE TO RED GEAR HANDLE LIGHT REMAINED ILLUMINATED AFTER GEAR SELECTED UP. AIRCRAFT LANDED AT JFK WITH NO FURTHER INCIDENTS. MAINTENANCE REPLACED RIGHT GEAR UPLOCK SWITCH. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (M)