What was found
AFTER T/O CREW HEARD LOUD BANG AND SLIGHT A/C SHUDDER, RED GEAR DOOR LIGHT STAYED ON WITH GEAR HANDLE UP AND F/E'S ALTERNATE RIGHT GEAR DOOR LIGHT STAYED ON. (NOTE: BANG OCCURED WHEN GEAR WAS RAISED). MX REMOVED RT GEAR RETRACT CYLINDER, CAPPED HYD LINE, AND PREPARED A/C FOR FERRY FLT TO KMCN FOR REPAIRS. WRITE-UP STILL OPEN. REMOVED SHEARED BOSS PIN, CLEANED CORROSION, FABED AND INSTALLED BUSHING IAW DAC FAX DMM02126 AND INSTALLED NEW BOSS PIN. REPLACED RETRACT CYLINDER IAW DACO MM 32-32-2, BLED BRAKES, ACCOMP GEAR SWING IAW DACO MM 32-31-1. OPS CHK NORM.