A method and apparatus for assessing runway surface conditions including: configuring a runway surface processing module to process: a first type of reported runway surface condition information, a second type of a set of Runway Condition Assessment Matrix (RCAM) codes, and a third type of a set of runway surface condition codes including: SNOWTAM codes; selecting, at least one of the first, second or third types of runway surface information to input to the runway surface processing module, to estimate at least a braking distance and a braking action of the aircraft; receiving, by input, one of at least the first, second or third types of runway surface information by the runway surface processing module; and mapping a runway surface condition, reported or entered of the first, second or third types of runway surface information, to a particular runway condition code to compute the required runway distance.