As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) AMBER LT MLG DOOR AND LH RED MLG LIGHT REMAINED ILLUMINATED AFTER TAKEOFF. A/C RETURNED TO THE POINT OF DEPARTURE. LT MLG UPLOCK ACTUATOR INBOARD SPRING FOUND BROKEN. SPRING WAS REPLACED, GEAR SWINGS WERE CARRIED OUT AND THE AIRCRAFT WAS SUBSEQUENTLY RELEASED FOR SERVICE. (TC# 20180723013)