As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LAX - LANDING GEAR FAILED TO EXTEND ON INITIAL ATTEMPT. GEAR SELECTED DOWN USING OVERRIDE PROCEDURES. MAINTENANCE REPLACED NOSE LANDING GEAR 'A' SYSTEM DOWN LOCK PROXIMITY SENSOR. LANDING GEAR OPERATIONAL CHECK NORMAL. AIRCRAFT RETURNED TO SERVICE. (M)