Originally Posted by
obnoxio f*ckwit
On 225, the VS/ALT is always on the collective, and IAS is always on the cyclic, irrespective of whether you are 3 or 4 axis.
I know its not strictly relevant to this thread, but the above is not really right.
On the 225, yes IAS is always on the cyclic of course, but in 3 axis, VS / ALT is on the cyclic if speed is above ~65 kts (varies slightly with dv/dt), and on the collective if below that. As it transitions from vertical mode (ie VS / ALT) on the cyclic, to the collective, as the speed drops below ~65, IAS automatically engages on the cyclic, but you can decouple it if you want, to be left with the vertical mode on the collective, right down to zero airspeed if you wish.