What was found
PRIOR TO LANDING, A CAS MESSAGE APPEARED, LOW BRAKE PRESSURE. ON TOUCHDOWN THE ACFT HAD NO BRAKES, EMERGENCY BRAKE SYSTEM WAS ACTIVATED TO STOP THE PLANE. MAINTENANCE LOOKED INTO THE SITUATION FOUND NO ISSUES. COULD NOT DUPLICATE DISCREPANCY. ON SUBSEQUENT FLIGHT SAME ISSUE RE-OCCURRED. ACFT IS CURRENTLY BEING TROUBLESHOT.