A computing method for transmitting data from a ground computing device to an aircraft computing device, comprises receiving, by an aircraft API executing on an aircraft interface computing device, an initial communication from an aircraft service executing on the aircraft computing device located onboard an aircraft; determining, by the aircraft API, that a data file is to be transmitted from the ground computing device to the aircraft computing device; transmitting, to the ground computing device, a data signal configured to cause the data file to be transmitted from the ground computing device to a transient storage location associated with the aircraft interface computing device; and causing the data file to be transmitted from the transient storage location to the aircraft computing device.