Simple
I am currently studying at CABAIR and have done the skills assessment.
My advice is as long as you have a basic concept of maths and physics, GCSE level min, and can use a games console then you will be fine. If I remember rightly its a COMPAS test, but i think its simpler than all of the links you've provided , it tests memory, reaction, maths, physics and the use of rudder pedles and joystick. Hope this was of some help.