As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LANDED UNDER AMBER ALERT DUE TO HYDRAULIC QUANTITY INDICATION. AIRCRAFT TOWED TO GATE. REPLACED O-RING NR 2 ELECTRIC PUMP PRESSURE REDUCER FITTING, REFILLED & PRESSURIZED SYSTEM. NO LEAKS NOTED. RETURN TO SERVICE. SUSPECT NORMAL WEAR IN SERVICE.