As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RT MLG DOOR STUCK OPEN IN FLIGHT. RETURNED TO DEPARTURE. REMOVED, & CLEANED BOTH MLG DOOR LOCK SWITCHES. CLEANED AND LUBED THE UPLOCK ACTUATOR AND SWING ARM. CYCLED GEAR MULTIPLE TIMES AND FOUND ALL FUNCTIONS & INDICATIONS NORMAL IAW AMM 32-30-00.