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.
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.