What was found
FLT 206 - MCO-MCO, AIR RETURN, AFTER TAKEOFF THE RED LEFT GEAR UNSAFE LIGHT REMAINED ON. RECYCLED GEAR, NO HELP, LIGHT REMAINED ON. GEAR DOOR OPEN LIGHT WAS OUT. REPAIRED AND ADJUSTED LEFT MLG UPLOCK PROXIMITY SWITCH SYSTEM. OPS CHECKED OK IAW 32-10-0.