1. A computer network for calculating and distributing a true aircraft friction braking friction coefficient for an aircraft landing surface comprising: (A) A computer, one or more computer input nodes associated with and communicating with the computer, and one or more computer output nodes associated with and communicating with the computer; (B) Wherein the one or more computer input nodes communicate with a flight data management system of a landing aircraft that is landing or has landed on the aircraft landing surface, wherein the aircraft's flight data management system has recorded thereon one or more sets of data points relating to one or more of the landing aircraft's following properties: aircraft ground speed, aircraft brake pressure, aircraft longitudinal acceleration, aircraft engine thrust setting, aircraft reverse thrust setting, aircraft engine revolutions per minute, aircraft air speed, aircraft vertical acceleration, aircraft spoiler setting, aircraft airbrake setting, aircraft aileron setting, aircraft flap configuration, aircraft pitch, and aircraft autobrake setting; (C) Wherein the one or more computer input nodes communicating with the landing aircraft's flight data management system obtain from the landing aircraft's flight data management system the one or more sets of the data points recorded on the aircraft's flight data management system between substantially a point in time that the landing aircraft touched down on the aircraft landing surface until a predetermined point in time thereafter, and wherein the one or more sets of the data points obtained by the one or more computer input nodes from the landing aircraft's flight data management system include one or more sets of data points relating to one or more of the landing aircraft's following properties: aircraft ground speed, aircraft brake pressure, aircraft longitudinal acceleration, aircraft engine thrust setting, aircraft reverse thrust setting, aircraft engine revolutions per minute, aircraft air speed, aircraft vertical acceleration, aircraft spoiler setting, aircraft airbrake setting, aircraft aileron setting, aircraft flap configuration, aircraft pitch, and aircraft autobrake setting; (D) Wherein one or more of the computer input nodes communicate with one or more environmental data sources, wherein the one or more environmental data sources have recorded thereon one or more sets of data points relating to one or more environmental parameters, wherein the one or more sets of the data points relating to the one or more environmental parameters are measured between substantially the point in time that the landing aircraft touched down on the aircraft landing surface and the predetermined point in time thereafter, wherein the one or more computer input nodes obtain from the one or more environmental data sources the one or more sets of the data points relating to the one or more environmental parameters chosen from the following group: air temperature, air pressure, relative humidity, wind speed, wind direction, pressure altitude, and aircraft landing surface elevation; (E) Wherein one or more of the computer input nodes communicate with one or more aircraft data sources, wherein the one or more aircraft data sources have recorded thereon one or more sets of the data points relating to aircraft parameters pertaining to the landing aircraft, and wherein the one or more computer input nodes obtain from the one or more aircraft data sources the one or more sets of the data points relating to aircraft parameters pertaining to the landing aircraft, wherein the one or more sets of the data points relating to the one or more aircraft parameters pertaining to the landing aircraft include one or more sets of the data points relating to one or more aircraft parameters chosen from the following group: aircraft landing mass, aircraft engine type, number of aircraft engines, aircraft tire type, and aircraft type; (F) Wherein the one or more computer input nodes transmit to the computer: (i) the one or more sets of the data points obtained by the one or more computer input nodes from the landing aircraft's flight data management system, (ii) the one or more sets of the data points relating to the one or more environmental parameters obtained by the one or more computer input nodes from the one or more environmental data sources, and (iii) the one or more sets of the data points obtained by the one or more computer input nodes from the one or more aircraft data sources relating to the one or more aircraft parameters pertaining to the landing aircraft; (G) Wherein the computer calculates the true aircraft braking friction coefficient of the aircraft landing surface: (i) using at least one of the one or more sets of the data points obtained by the one or more computer input nodes from the landing aircraft's flight data management system and transmitted by the one or more computer input nodes to the computer; (ii) using at least one of the one or more sets of the data points obtained by the one or more computer input nodes from the one or more environmental data sources and transmitted by the one or more computer input nodes to the computer; and (iii) using at least one of the one or more sets of the data points obtained by the one or more computer input nodes from the one or more aircraft data sources and transmitted by the one or more computer nodes to the computer; and (H) Wherein the true aircraft braking friction coefficient calculated by the computer is communicated by the computer to the one or more computer output nodes and thereby distributed directly or indirectly by the one or more computer output nodes communicating with the computer.