As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LAX - FLT NR 0527 - AFTER TAKEOFF, THE LANDING GEAR WOULD NOT RETRACT. THE CAPTAIN DECIDED TO RETURN TO LAX. MAINTENANCE ADJUSTED THE 'NOSE GEAR NOT COMPRESSED' SENSORS. GEAR RETRACTION AND INDICATION TEST GOOD. SERVICED NOSE STRUT. REPLACED THE RIGHT TRACK POSITIONER ACTUATOR. GEAR RETRACTION TEST PERFORMED GOOD. (M)