Some more thoughts

How to get a 3D matrix rotation around a coordinate axis

How to get a 3D matrix rotation around any axis

Difference between R.T and T.R

How to move around a central point

Why Pitch, Roll, Yaw is not the same than Yaw, Pitch, Roll...

... The Truth is Out There ...

rotation are not commutative (has anybody proved the contrary ?)

what will happen in a real plane ?

How to get the Pitch from a general Transformation ?

... that depend of the way you want to define the pitch...

Just do only incremental stuff

So, how to apply some Pitchy relative rotation whatever your initial point is ?

Normalisation