As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAH - FLT 3522 - THE CREW REPORTED THAT THE LEFT MAIN LANDING GEAR WOULD NOT RETRACT. THE AIRCRAFT RETURNED TO IAH WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE REMOVED AND REPLACED THE LEFT MAIN LANDING GEAR SHUTOFF VALVE. THE AIRCRAFT WAS TEST FLOWN SATISFACTORYILY, AND WAS APPROVED FOR RETURN TO SERVICE. (M)