As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 HYDRAULIC ISOLATION VALVE CAUTION LIGHT ILLUMINATED, ROLL SPOILER INBD HYD CAUTION LIGHT CAME ON AND OFF SEVERAL TIMES, BUT EXTINGUISHED. HYDRAULIC PRESSURE WAS GOOD FOR THE FLIGHT, BUT QUANTITY WAS LOW. ALL OTHER INDICATIONS NORMAL. R & R O-RING ON PRESSURE FITTING, OTBD ROLL SPOILER ACTUATOR. GROUND RAN. OPS CHECKED GOOD. OK FOR SERVICE.