Readback COMMS

For an aircraft callsign, there are broadly speaking three types of registration:

1. The registration of the aircraft. This is read back as the five letters individually using the phonetic alphabet.
2. Either the type of aircraft or an operators callsign, followed by the last four letters of registration. This is read as the operator's callsign as spoken in English, followed by the four letters using the phonetic alphabet.
3. An operators callsign followed by a flight ID. This flight ID is usually recognisable as being three numbers and then a letter. This is read as the operator's callsign as spoken in English, followed by the three numbers individually then the letter using the phonetic alphabet.

Note that 1 & 2 above can be abbreviated after ATCATC —Air Traffic Control has done so first: 3 cannot.