A method and system for dynamically selecting and retrieving real-time data from a time/space partitioned flight computer system located on board an aircraft. The system used to implement this method consists of an on-board memory read-out device attached to a serial data bus capable of communicating with the flight computer and/or a ground-based memory read-out device capable of communicating with the flight computer via radio telemetry. This data consists of any valid memory location within the flight computer, including but not limited to flight data, aircraft status, and flight computer state.