System and method for remote access to on-board aircraft systems

A system and method for providing remote access to an on-board aircraft system provides establishing communication between an aircraft server that is located within the aircraft and a remote computer that is located outside of the aircraft. In the aircraft, a request is received to establish a remote session between the remote computer and the aircraft server. A passcode is generated in the aircraft, and is transmitted from a first communication device that is collocated with the aircraft to a second communication device that is collocated with the remote computer. The passcode is then transmitted from the remote computer to the aircraft server and, upon receipt of the passcode by the aircraft server, the remote computer is provided with remote access to the on-board aircraft system.