As we know the TBM requires a lot of right-rudder trim for take-off. However once the AP is engaged and the Yaw Damper turned on, shouldn’t it self-correct the rudder trim? Currently I have to do it manually post ap/yd activation.
Yes it does
I’m not that familair with the TBM but from all turboprops I have flown in real life, there has only been one that auto-trims when the YD is engaged. It is generally not a function of the yaw damper to keep the aircraft flying coordinated under all flight conditions, the yaw damper generally coordinates turns and dampens specific occilations only. Manual trim is required to fly coordinated in level flight which means every power or speed change needs retrimming of the rudder.
Again, not saying it should be like that on the TBM.
Edit: did a quick search in the TBM POH but couldn’t find anything on the topic.
Which TBM are you referring to? There are so many…
I found this video (3m45s):
G1000 and G3000 equipped TBMs have an auto-trim function when the yawdamper is engaged.
So yes, it should autotrim.
Yes it should auto trim with the YD on. Source: I am a current TBM pilot