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 loss of control while landing on a remote helipad.
The pilot's failure to maintain directional control during the engine start sequence, which resulted in the helicopter sliding on a steel deck and impacting a crane. Contributing to the accident was the absence of traction material on the helicopter operations portion of the steel deck.