What was found
MAIN RIGHT GEAR WOULD NOT RETRACT. AFTER GEAR RETRACTION NOSE AND LEFT MAIN RETRACTED. RIGHT MAIN REMAINED DOWN AND LOCKED (GREEN). ALSO CONFIRMED BY TOWER ON DEPARTURE NOSE AND LEFT RETRACKED, RIGHT MAIN DOWN. NO RED UNLOCK LIGHT. PER QRH LOWERED GEAR , 3 GREEN NO RED. LANDED UNEVENTFULLY. PERFORMED REMOVAL AND INSTALLATION OF RH MAIN LANDING GEAR DOWN LOCK SWITCH. WORK DONE IAW AMM CH 32-60-00. PERFORMED MAIN LANDING GEAR SWINGS AND OPERATIONAL TEST IAW AMM CH 32-60-0ALL OPS CHECK GOOD.