During cruise phase with A/P engaged and KB switch pressed and KB light on, the aircraft most of the time oscillates pitching up ~5m/s and down ~5m/s. That is, aircraft cannot be steady and stable on straight and level flight. This was not present in version 2. I tried disengaging the Α/P AUTO TRIM, but it doesn't seem to help. I even used ТАНГАЖ without pressing KB button, but neither this solves the problem permanently. It still happens randomly. A bug, or I am missing something ?

Dimitri, could you please say something on this ?

Further to my unreplied message :

As the issue is making the v3 addon unusable I reinstalled v2 (with realistically less features, but working properly).

Testing and comparing the functions of the two versions I realised that pitch trim value goes up to the max, as soon as A/P is engaged.In v2 remains near the centre. This could be the cause ?

In addition, v2 is far more stable in steering, maybe because of trim stability.

Apparently the v3 was not ready to release one year ago. I am amazed that nobody noticed that thirteen months later. It's a pity, as v3 has much more realism in its panels................