Originally Posted by
MurphyWasRight
The diagram is missing detail of the electric stab trim motor block.
That is where an absolute override of all automatic trim inputs by pilot inputs "should", very simple no computer required.
It the reports are correct it appears it may not be present.and the issue is fcc slowness in recognising pilot inputs and dibling auto inputs.
I'm not sure
1) If it was, the Interlock in FCC would not be neccessary. So the educated guess is, that it is not.
2) Operating the trim switches in AP on leads to disengagement. Another relay to priorize manual input woud be superfuous.