KIAS * 128 bedeutet, dass FSUIPC Dir den 128-fachen Wert der indicated airspeed liefert. Bei 200 Knoten also 25600. Also:
function GetAirspeed: string;
var
dwResult, dwBuf : DWORD;
begin
FSUIPC_Read($02bc, 4, @dwBuf, dwResult);
FSUIPC_Process(dwResult);
Result := Format('%d', dwBuf div 128);
end;
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