Offenbar ist "Heading" eine Hardware-Option. Für GPS-Track braucht man ein externes GPS.
Aus dem POH:
When configured as a Directional Gyro (DG), direction of flight information is presented. The flight direction can be configured to be presented as a non-slaved heading, aided by an optional internal magnetometer, or inertially stabilized GPS track when connected to an external GPS navigator. Multiple display presentations, including compass rose, GPS HSI, and GPS Arc views can be selected by the pilot. The unused portions of the display area can similarly be configured for a variety of textual data-overlays
Und:
6.4 GPS Interface (Optional) The Global Positioning System (GPS) interface is an optional RS-232 serial input that is compatible with the industry standard aviation output provided by most panel mounted GPS units, and NMEA serial interfaces provided by most hand-held GPS units. This is a text/binary protocol output by the GPS navigator that contains situational awareness information such as ground speed, track, distance to destination, cross track, etc., and is typically utilized by remote mapping/display products to provide additional pilot awareness. This output does not provide IFR compliant lateral or vertical guidance, therefore all GPS track and deviation related data presented is for VFR operations only.
