As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAH - FLIGHT 2922 AFTER TAKEOFF, THE CREW SELECTED GEAR LEVER TO UP POSTION BUT GEAR DID NOT RETRACT, CYCLED LEVER BACK DOWN THEN UP RETRACTED NORMAL. THE AIRCRAFT CONTINUED TO IAH WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE PERFORMED EXTENSION AND RETRACTION CHECKS WITH NO DEFECTS NOTED, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.