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 flight instructor's failure to correct for the student pilot's loss of aircraft control in a timely manner during takeoff. Contributing to the accident was the instructor's inability to see the taxiway sign from the rear seat.
the pilot's failure to maintain directional control of the airplane during the landing flare, which resulted in a collision with an runway sign.
The pilot's inadequate compensation for the existing crosswind condition and subsequent failure to maintain directional control during the landing rollout.
the student pilot's failure to maintain directional control of the conventional gear aircraft during an aborted landing attempt. Factors in the accident were the student's high and fast approach and his failure to achieve the proper touchdown point.
THE FAILURE OF THE PILOT TO MAINTAIN DIRECTIONAL CONTROL DURING THE LANDING ROLL.