What was found
DURING APPROACH AFTER A ROUTINE FLIGHT FROM KDAL TO KSFB, THE CREW NOTED A MAIN BRAKES FAIL CAS MESSAGE. THE CREW FOUND THE SYSTEM PRESSURE AT 2100 PSI AND THE PUMP NOT RAISING THE PRESSURE TO NORMAL LEVELS. FOLLOWING THE QRH, THE CREW LANDED AT KSFB WITHOUT INCIDENT. THERE WAS SUFFICIENT PRESSURE TO STOP ON THE TAXIWAY AND GET TOWED TO THE FBO. TECHNICIANS REMOVED AND REPLACED THE HYDRAULIC RESERVOIR IAW PILATUS AMM PC24-A-E32-40-0011-00A-520A-A AND PC24-A-E32-40-0011-00A-720A-A. OPS CHECK GOOD. LEAK CHECK GOOD.