The Flight Path Marker (FPM) is a symbolic representation of the aircraft trajectory. It reflects the flight path of the aircraft with respect to an earth-fixed 3D coordinate system. In addition to pitch, roll, and yaw the FPM accounts for wind, vertical and lateral G loading, airspeed changes, PCL changes, etc. While the FD is activated, the FPM will be displayed (refer to Flight Instruments for other conditions that will activate the FPM).