Have you noticed that when observing your air speed indicator in the cockpit view, then swopping over to the default, 6 instrument view, (with the "W" key), for a better view of the runway ahead, that the two readings are different, sometimes as much as 20-40 knots difference....?
(The cockpit view readings are generally the higher of the two).
This raises problems in trying to calculate the
real stall speed when flaring out for a landing...

....!!
(Note: when flying prop planes with conventional analogue instruments).
...any comments...?
(Note that both sets of instruments are reading true air speed in knots)...?
Cheers all...
Paul.
(England).
Win 8.1 64-bit. DX11. Advent Tower. Intel i7-3770 3.9 GHz 8-core. 8 GB System RAM. AMD Radeon HD 7700 1GB RAM. DVD ROM. 2 Terra Byte SATA Hard Drive. Philips 17" LCD Monitor. Saitek Cyborg X Fly-5 Joystick. ...and a Briggs and Stratton Petrol Lawn Mower.