Originally Posted by
chevvron
Don't know about other parts of the world but 'go ahead' is a nono in the UK; 'pass your message' is used instead.
GO AHEAD is Standard ICAO Annex 10 phraseology.
“Proceed with your message.” Note:- Not used whenever the possibility exists of misconstruing “GO AHEAD” as an authorization for an aircraft to proceed. The phrase “GO AHEAD” may be omitted and, in its place, a response made by using the calling aeronautical station’s callsign followed by the answering aeronautical station’s callsign.