As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT TOOK OFF AND RECEIVED AN INDICATION THAT THE RIGHT MLG WOULD NOT RETRACT. THEY RETURNED TO DEPARTURE. THEY DID NOT LAND OVERWEIGHT AND NO EMERGENCY WAS DECLARED. THE AIRCRAFT IS BEING T/S BY MFG TO DETERMINE THE CAUSE OF FAILURE.