As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) GEAR DOWN APPROACH YYZ, HAD THREE GREEN & RED DOOR LIGHT, FLIGHT ENGINEER LT GEAR OR DOOR LIGHT. FOLLOWED ABNORMAL PROCEDURE 03:18:03 (ALL LIGHTS WENT NORMAL ON SHORT FINAL). LT MAIN GEAR INBOARD UPLOCK SENSOR ADJUSTED I.A.W. M.M.32-61-07.