As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAKEOFF AFTER GEAR RETRACTION, LEFT MAIN GEAR UNSAFE (RED) LIGHT REMAINED ILLUMINATED WITH GEAR HANDLE UP, ALL OTHER GEAR AND DOOR LIGHTS NORMAL. AIR TURNBACK TO MSP. REPLACED LANDING GEAR ACCESSORY IAW MM 32-09-121. GROUND FUNCTION CHECKS NORMAL, OK FOR SERVICE.