Max speed?

I've been fooling around with some sort of high mach (like in the double digits
) aircraft, but it seems like FS9 will not allow any plane to exceed about 2900 knots. I know that the aircraft can acheive higher (or atleast thats what the "aircraft" file states) but still i cant push through over 3000. Is there some way to change this?
If anyone knows thank you in advance
Nick

If anyone knows thank you in advance
Nick