Originally Posted by goeasy
Good practice using two hands.... Both off or both on! Guess its why 380/350 only has one button for both FDs.
I am not sure is a good practice
DSC-22-30-20 P5/6
Note: If AP/FDs are OFF, and FD2 then FD1 are engaged within 180 ms (one computation cycle),
a flip flop of master FMGC may occur.