Is that realistic?

[TYTY]

At the moment i fly from Ghuangzou to Los Angeles and 2H away from the coast i see 145kts tailwind that pushes me up to a GS of 647kts over the pacific.

I think the speed of sound is around that 666kts when i remember that right, does that mean that i am flying a bit und the speed of sound?

[Dubya]

Ground speed is not the same at airspeed.

Understanding different types of speeds

There are 4 different types of speed we are going to be covering in this tutorial. Indicated airspeed (IAS) True airspeed (TAS) Ground speed (GS) Mach speed (M) Indicated airspeed (IAS) [image] Indicated airspeed is what we see inside the plane. This is how we judge when to rotate, when we are approaching a stall. Or any other critical flight dynamic. There is also such thing as Calibrated airspeed (CAS) which is IAS corrected for Installation errors. We don’t have that in IF, but dur…

Check this out for more information.

[TYTY]

THANK YOU :o Now i understand that. Thanks, Topic can be closed