As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LAX - FLT 2490 - EN ROUTE LAX-DFW, LOST LEFT SIDE HYDRAULIC SYSTEM. RETURNED LAX AND LANDED WITHOUT FURTHER INCIDENT. REPLACED LEFT SIDE MAIN LANDING GEAR DOWN LOCK ACTUATOR RETURN LINE. LEAK CHECKS GOOD. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)