This is indeed an unusual Americanism because it does not consist of three words, which appears to be a formal requirement in American "Aircraft Technical Manuals". So for example, the AWACS radar does not have Tilt, but an "Elevation Command Angle". The console (Mission-crew Work Station) does not have a keyboard, but an "Alphanumeric Entry Device" and so forth. Indeed, the occasional aberration of this rule has been corrected in the mid-life update, where the older "Situation Display" has been replaced by the "Primary AWACS Display". Needless to say, this approach to military systems certainly meets the requirement for a surfeit of acronyms.