As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAH - FLT 3533 - PILOT REPORTED THE LEFT MAIN GEAR BANGED AND WOULD NOT RETRACT. THE SYSTEM WAS RECYCLED AND THE GEAR RETRACTED NORMALLY. THE AIRCRAFT LANDED WITHOUT INCIDENT AT IAH WHERE MAINTENANCE REMOVED AND REPLACED THE LEFT MAIN GEAR UPLOCK PROXIMITY SWITCH. THE PROXIMITY SWITCH TESTED GOOD AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE. (X)