As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DFW - FLT 0296 - AFTER TAKEOFF DFW WHEN LANDING GEAR RETRACTED, MLG DOOR WARNING REMAINED ILLUMINATED WITH ASSOCIATED RT MLG DOOR WARNING INDICATION ON F/E PANEL. EXTENDED LANDING GEAR AND ALL INDICATIONS RETURNED TO NORMAL. AIRCRAFT RETURNED TO DFW AND LANDED WITHOUT INCIDENT. REPLACED RT MLG DOOR SWITCH. SYSTEM GROUND CHECKED, NORMAL OPERATION. (X)