Dynon Avionics D1 - Manual (Page 13)

D1 Pilot’s User Guide 3-1
3. INTENDED USE
The D1 Pocket Panel is a portable device that aids situational awareness. As the D1 does not have
TSO authorization from the FAA or other regulatory body, is not suitable for permanent
installation in type certificated aircraft.
The D1’s Ground Speed, Altitude, Vertical Speed, and Ground Track (direction) instruments are
GPS-derived. Their indications WILL BE DIFFERENT from the airspeed, altimeter, VSI, and heading
instruments in your aircraft panel. The D1’s GPS-based indications should not be considered
replacements for any of these primary aircraft instruments. Details about each of these
differences are described in the Product Tour section of this guide.