Two of these must be Australian variations, as a U.S. pilot I've never come across "Roger that" - just "Roger". And never have come across "affirm" only "affirmative".
Examples are in ICAO standard phraseology, FAA ORDER JO 7110.65, and the Aeronautical Information Manual.
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[ 4.9 ms ] story [ 10.2 ms ] threadExamples are in ICAO standard phraseology, FAA ORDER JO 7110.65, and the Aeronautical Information Manual.
I've definitely heard affirm from pilots in the UK