As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 0017 - TUS TO SAT - DURING CRUISE FLIGHT CREW REPORTED HYD SYS 1 INDICATED 0 PRESSURE AND 0 QUANTITY. CONTRACT AND ONT MX PERSONNEL WERE DISPATCHED. AIRCRAFT DIVERTED TO TUS AND DECLARED NO EMERGENCY AND LANDED SAFELY. MX PERSONNEL AFTER VISUAL INSPECTION FOUND HYD SERVICE LINE DISCONNECTED. MX RE-TIGHTENED SERVICE LINE OPERATIONALLY CHECK SATISFACTORY AND AIRCRAFT WAS RELEASED TO RETURN TO SERVICE.