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mooooooonnn
22nd Feb 2024, 14:33
Hi, I have a question.

When A220's PFCCs are all failed, the airplane enters direct law mode.
In this mode, from description, pilots should manually control stabilizer trim.
When this situation occurs, does pilot need to control stabilizer trim by controlling trim switches on the sidestick?
Or is there any manual stab trim lever or wheel on board?

Thanks for reading and answering.

1A11_mech
3rd Mar 2024, 19:08
Hi,
I can add that in case all three PFCCs fail, the aircraft will utilize the AFCU (Alternate Flight Control Unit), and, as you mentioned, Direct Law will be applied.
And yes, in this case the stab trim can be adjusted with the buttons on the sidestick.
There are separate switches for trimming ailerons and the rudder on the center pedestal.