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 excessive brake application during landing.
the flight instructor's failure to maintain directional control during the landing rollout.
The pilot failed to maintain directional control after encountering a gust of wind during the landing roll. Factors were the unexpected wind gusts and the soft terrain adjacent to the runway.