What was found
IAH - FLT 2522 - PILOT REPORTED THAT WHEN THE GEAR WAS RETRACTED, THE LEFT MAIN GEAR DOOR REMAINED OPEN. THE AIRCRAFT RETURNED TO THE FIELD WITHOUT FURTHER INCIDENT. MAINTENANCE REMOVED AND REPLACED THE LEFT MAIN GEAR FORWARD INBOARD DOOR LATCH. THE GEAR DOOR WAS SATISFACTORILY OPERATIONAL TESTED, AND THE AIRCRAFT WAS RETURNED TO SERVICE. (Z)