System and method for detecting an on ground condition of an aircraft

Systems (300) and methods for detecting an on ground condition of an aircraft (100) are disclosed. A weight on wheel (WOW) system may determine that an aircraft (100) is on the ground. Wheel speed sensors (322,324,326,328) may measure the speed of the aircraft wheels (132,134). Axle reference speeds (ARS) may be calculated for each landing gear (110,120,130) based on the speed of the aircraft wheels (132,134). A brake control unit (310) may determine that the axle reference speed (ARS) for each axle of the landing gears (110,120,130) is above an on ground threshold (OGT) speed, and the brake control unit (310) may allow braking to be applied.