As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED, ON APPROACH TO DFW THE LANDING GEAR FAILED TO EXTEND AND THE CREW PERFORMED GRAVITY EXTENSION PER QRH. THE AIRCRAFT LANDED SAFELY AT DFW AND WAS TOWED OFF THE RUNWAY. MAINTENANCE REPLACED LEFT HAND MAIN LANDING GEAR DOOR OPEN PROXIMITY SENSOR 33GA PER AMM 32-31-71 (AALA202303214296) AND REPLACED LANDING GEAR SAFETY VALVE 49GA PER AMM 32-31-17. (AALA202303215755) A SATISFACTORY OPERATIONAL CHECK WAS ACCOMPLISHED.