What was found
ON APPROACH TO LAND IN FNL, PUT GEAR HANDLE IN DOWN POSITION. HEARD AND FELT THE GEAR MOVE. INDICATOR LIGHTS SHOWED NOSE AND LT MAIN GEAR DOWN, BUT NOT RT MAIN. BROKE OFF APPROACH AND RECEIVED VECTORS AND A SAFE ALTITUDE FROM ATC. FOLLOWED LANDING GEAR MANUAL EXTENSION CHECKLIST. AFTER 120 PUMPS OF GEAR HANDLE, RECEIVED A GREEN LIGHT FOR THE RT MAIN. CONTINUED TO APA & LANDED WITH NO OTHER ISSUES.