STAGED METHOD TO DETECT BRAKE FAIL CONDITIONS IN BRAKE CONTROL SYSTEMS

A system for two-stage determination of a brakefail of an aircraft brake system includes an aircraft brake. The aircraft brake (106) is configured to receive a current command value, convert the current command value to a braking pressure and output a detected pressure value corresponding to the braking pressure. The system also includes a brake control unit (BCU) (102) configured to determine a pressure command value, convert the pressure command value to the current command value and to determine whether a brakefail event has occurred based on the pressure command value, the current command value and the detected pressure value.