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 improper use of the flight controls while performing a hovering autorotation and the flight instructor's excessive remedial action which resulted in a hard landing.
The glider pilot's failure to maintain control of his aircraft during spoiler retraction, which led to the Piper pilot's inability to recover safe flying airspeed within the altitude constraints at the time of the event. Contributing factors were the failure of the glider pilot to ensure that the spoilers were locked prior to takeoff, and the binding of the tow aircraft's tow hook release latch.
THE PILOT DID NOT MAINTAIN DIRECTIONAL CONTROL OF THE AIRPLANE DURING THE LANDING ROLL IN GUSTING WIND CONDITION.