National differences? Or just gash controllers embellishing their phraseology?
As a UK ATCO, CAP 413 requires:
"Call sign descend to altitude xxxx feet, QNH xxxx" (or FL or height/QFE).
If I give you a level to fly at, you are expected to maintain it until I or a colleague says differently, you request a change and we agree, or the procedure you are cleared on requires a change.
As for abbreviated call signs, CAP 413 says:
From Table 9
GBFRM becomes G-RM
N31029 becomes N029
N753DA becomes N3DA
Last edited by orgASMic; 1st Sep 2013 at 16:32.