Systems and methods for updating a scale of a barometric altimeter on aircraft

Systems and methods for updating a scale of a barometric altimeter on aircraft are provided. The method, for example, may include, but is not limited to, receiving, by an aircraft communication system, barometric altimeter scale data corresponding to an atmospheric pressure at an airport, determining, by the processor, if the altitude of the aircraft is below a transition level for the airport, and adjusting, by the processor, the scale of the barometric altimeter based upon the received barometric altimeter scale data when the altitude of the aircraft is below the transition level for the airport.