As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SYSTEM A HYD QTY INDICATOR DROPPED TO 1.5 GALLONS FOLLOWED BY ILLUMINATION OF SYSTEM B LOW QTY LIGHT. ABNORMAL PROCEDURES FOLLOWED. A/C ARRIVED WITH A SYSTEM AT 2.5 GAL. SERVICED TO FULL EXERCISED FLAPS/SLATS AND SPOILERS OPERATED GEAR HANDLE. PERFORMED YAW DAMP TEST OPERATED RUDDER. RAN B SYSTEM FOR SEVERAL HOURS. NO LEAKS FOUND.