Coverage depends on ground receiver reception and is not a complete picture of traffic.
The hex code is the aircraft's ICAO 24-bit address, broadcast by its ADS-B transponder. It is the key used to match live position reports to this registration.
The student pilot's failure to maintain obstacle clearance while taxiing on the ramp, resulting in a collision with an object.
the deer that ran out onto the runway and collided with the airplane. A factor associated with the accident was the night lighting conditions.
failure of the pilot to identify the inoperative airspeed indication and abort the takeoff, while there was sufficient runway remaining; excessive speed during the approach/landing; and the pilot's failure to perform a go-around after not attaining a proper touchdown point during the landing. A factor relating to the accident was: the blocked pitot tube, which resulted in an inoperative airspeed indicator.