What was found
ON APPROACH, SELECTED FLAPS 8 DGS, AUX HYDRAULIC PUMP ON. HEARD THUMPING NOISE, THEN AMBER L/R HYDRAULIC PRESSURE LOW CAS. SELECTED HYDRAULIC PAGE, SAW L AND R AMBER MAIN PUMPS WITH MAIN PRESSURE DROPPING THROUGH 1900 PSI. STARTED ABNORMAL CHECKLIST, THUMPING STOPPED, PRESSURE INCREASED TO 3070 PSI, CAS MESSAGE AND AMBER PUMPS CLEARED. AMBER FLAPS FAULT ILLUMINATED. FLAPS STUCK AT 2 DGS DOWN. RAN ABNORMAL CHECKLIST FOR BOTH PROBLEMS. NORMAL GEAR EXTENSION ACQUIRED, NORMAL BRAKE PRESSURE ACHIEVED, BUT COULD NOT CORRECT FLAP FAULT. LANDED WITH 2 DGS FLAPS DOWN. MAINTENANCE REPLACED THE FLAP PDU. OPS CHECK NORMAL