As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DFW - FLT 616 - AFTER TAKEOFF YYC, AFTER GEAR WAS RAISED THE LEFT RED GEAR LIGHT REMAINED ILLUMINATED, AMBER GEAR DOOR OPEN LIGHT EXTINGUISHED. NO UNUSUAL YAW OR VIBRATION. AIRCRAFT CONTINUED TO DFW AND LANDED WITHOUT INCIDENT. REPLACED LEFT MAIN LANDING GEAR DOOR PROXIMITY SENSOR UNIT. ACCOMPLISHED REQUIRED TESTS. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)