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Indicated airspeed is the speed of the air going over the wings. You go higher, indicated goes down, because the air is thinner. You can see in the top right that we are doing .80 Mach. True airspeed is 455 + 134 tailwind = 589ias is indicated airspeed right? if thats the case how are you only flying at 245kts but your ground speed is 580kts?