As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT MAIN GEAR UNSAFE AFTER TAKEOFF, AIRCRAFT DESCENDED TO LOWER ALT, AS THROTTLES ADVANCED RIGHT MAIN GEAR FREE FELL DOWN. EXECUTED UNSAFE GEAR INDICATION CHECK LIST, GEAR DOWN 3-GREEN, AIR RETURN ACCOMPLISHED. CYCLED LANDING GEAR SEVERAL TIMES, NO FAULTS NOTED. REMOVED AND REPLACED RIGHT MAIN UPLOCK ACTUATOR IAW MM 32-32-41 AS A PRECAUTION. REF TO NR 4335180 FOR OPS AND LEAK CHECK. ROTABLE PARTS CHANGE WAS INDICATED - TT 1178238, S/N OFF 08091 IPC REFERENCE 32-32-41-01.