As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DFW - FLT 0945 - AFTER TAKEOFF WHEN GEAR HANDLE RAISED, CENTER GEAR LIGHT REMAINED RED. GEAR WAS LOWERED WITH NORMAL PROCEDURES AND INDICATED SAFE. RETURNED AND LANDED WITHOUT INCIDENT. REMOVED CENTER LANDING GEAR PIN THAT WAS STILL INSTALLED. SYSTEM GROUND CHECKED, NORMAL OPERATION. (X)