As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TUL INFLIGHT T1745/25APR ORD TO LAX - LEFT HYDRAULIC SYSTEM LOSS IN FLIGHT. DIVERTED TO TUL AND LANDED WITHOUT INCIDENT. FOUND NOSE GEAR DOOR ACTUATOR HYDRAULIC HOSE LEAKING. REPLACED NOSE GEAR DOOR ACTUATOR HYDRAULIC HOSE. SYSTEM GROUND CHECKED NORMAL OPERATION.