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 pilot's decision to land on unsuitable terrain.
The failure of the pilot to maintain directional control of the airplane on the takeoff roll. Factors contributing to the accident included the loose gravel, ditch, and the fence.
The pilot's failure to adequately compensate for unfavorable wind conditions and maintain clearance from the terrain during an attempted VFR go-around. Factors include an encounter with unfavorable wind conditions during the landing flare and the attempted go-around.