As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BEGINNING OF DESCENT INTO SDF, AS THRUST LEVERS WERE BROUGHT TO IDLE THE SYSTEM 'B' HYDRAULIC LIGHTS ON F/O PANEL ILLUMINATED. BOTH SYSTEM 'B' PUMP LOW PRESS LIGHTS ON F/O PANEL ILLUMINATED AND SYSTEM QUANTITY DROPPED TO 0. LOSS OF SYSTEM 'B' CHECKLIST WAS ACCOMP AND EMERGENCY DECLARED, UNEVENTFUL LANDING. STILL OPEN.