An aircraft wireless data communication system includes an aircraft computer/server in communication with a plurality of aircraft systems. Access to the aircraft systems via the computer/server is available in real-time via wireless communication with a ground-based computer system. The ground-based computer system includes a computer that can be accessed from one or more networks of computers. Each authorized computer user on an airline, manufacturer, or supplier network has remote real-time access to the aircraft computer/server. Properly authorized remote users can: perform comparisons between the aircraft actual configuration identity and an aircraft authorized configuration identity; perform system diagnostic testing; view system status and parameters; collaborate with users from local and remote organizations using real-time aircraft data; and upload and download software and data to and from aircraft systems.