Currently, the analysis method of a motion system is dependent upon the pilots' subjective evaluation. This paper describes a method using the data recorded by an instrumented dummy to qualitatively analyze a combined motion system. The function of the dummy is to record the time histories of linear (force) and angular (moment) accelerations imposed on the pilot's station during flight maneuvers. The dummy is a recording device instrumented with three linear accelerometers, three gyros, a seven-tape cassette recorder and two Polaroid instant movie cameras. The pilot's voice evaluation will use one of the tapes. The functions of the two cameras are to monitor and correlate the flight events.