As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 3269 - LAX/IYK - PILOT REPORTED THAT AFTER TAKEOFF THE LANDING GEAR WOULD NOT RETRACT. AIRCRAFT RETURNED TO LAX AND LANDED WITHOUT INCIDENT. MAINTENANCE PERSONNEL DETERMINED THE LT SIDE SHUTTLE VALVE HAD FAILED AND REPLACED THE VALVE. GEAR SWINGS AND OPERATIONAL CHECKS WERE PERFORMED WITH SATISFACTORY RESULTS. AIRCRAFT WAS RETURNED TO SERVICE.