As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER THE GEAR WAS RAISED AFTER TAKEOFF, A RED RIGHT GEAR LIGHT REMAINED ILLUMINATED. ON RETURN TO LANDING, ALL GEAR LIGHTS INDICATED GREEN WITH HANDLE LOWERED. ACFT GROUNDED. AIR TURNBACK. REMOVED AND REPLACED THE RT MLG UPLOCK ACUATOR IAW AMM 32-32-41. ACCOMPLISHED MAIN LANDING GEAR UPLOCK ACTUATOR LEAK TEST FOR RT MLG. OPS CHECKED GOOD IAW AMM 32-32-40-400-801, STEP 3.G. NO LEAKS NOTED.