As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE LANDING GEAR WOULD NOT RETRACT AFTER TAKEOFF FROM IAH. THE GEAR HANDLE WOULD NOT GO PAST OFF POSITION. MAINTENANCE FOUND THE MAIN GEAR AIR SAFETY SENSOR OUT OF ADJUSTMENT. THE AIR SAFETY SENSOR WAS ADJUSTED/TESTED IAW MM 32-09-01 AND GEAR HANDLE OPERATION WAS GOOD.