As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT NR 0603 - EWR - THE RT MLG RED UNSAFE LIGHT AND RT GEAR DOOR LIGHTS ILLUMINATED IN FLIGHT. FUEL WAS DUMPED AND THE AIRCRAFT WAS RETURNED TO EWR WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE PEFORMED EXTENSION AND RETRACTION OF THE LANDING GEAR AND NO DEFECTS WERE NOTED. THE PROBLEM COULD NOT BE DUPLICATED. (Z)