I’ve seen some confusion with callsigns while flying around, and I’d thought I’d make this topic to clarify what these callsign suffixes mean.
Heavy: The heavy callsign is used for an aircraft with a MTOW (Max takeoff weight) of 300,000 lbs (136077.711 kilograms) and a high rate of wake turbulence.
Super: Super technically means “Super Heavy.” It is only used for the Airbus A380 and Antinov An-225.
Flight of 2-10: These callsigns are used when flying in a group. For example, the leader would use the callsign “Air Force 225 Flight of 2” and the second member would use “Air Force 225 Flight of 2.” and so on (including the number of members)
I hope this cleared up any confusion!