1. A method of determining effectiveness of an aircraft braking system on an aircraft during an aircraft landing comprising: generating a scalar deceleration value when a predefined braking event occurs, the scalar deceleration value corresponds to effectiveness of a braking system associated with an aircraft landing operation during occurrence of the predefined braking event on an aircraft, the scalar deceleration value comprising an actual deceleration of said aircraft compared to a predicted deceleration of said aircraft during each of a plurality of time intervals or distance intervals comprising said braking event; and disseminating the generated scalar deceleration value to downstream users, said downstream users located off the aircraft.