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 failure to compensate for the strong, gusting wind conditions, which resulted in a loss of airplane control during takeoff.
The flight instructor's inadequate remedial action to maintain directional control, which resulted in a ground loop/swerve during takeoff roll. A factor was the failure of the pilot who was receiving instruction to maintain directional control.
The flight instructor's failure to maintain directional control during the landing roll, which resulted in an inadvertent ground loop. A contributing factor was the flight instructor's diverted attention to talking with the student.