As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW WAS UNABLE TO RETRACT GEAR AFTER TAKEOFF. FOLLOWED QRH CHECKLIST AND LEFT THE GEAR DOWN. BY THE TIME CREW WAS ABLE TO ESTABLISH CONTACT WITH DISPATCH, THEY WERE 36 NL FROM IAH AND IT WAS AGREED THAT THEY SHOULD CONTINUE TO IAH. THE AIRCRAFT LANDED WITHOUT FURTHER INCIDENT AND WAS ABLE TO TAXI TO THE GATE. REPLACED LANDING GEAR SELECTOR CONTROL VALVE.