Originally Posted by
IFixPlanes
I don´t get it.
You have 3 independent sources for speed and hight. If you have different indications then compare the 3 values. When the CAPT indication is different to IFSD (integrated standby flight display) and FO indication and these two are equal then switch indication and NAV on 2 (FO) and have a good flight.
Nope.
So if those two indications match at 20 knots you’re going to switch and use them?
You level off using pitch power datums, assess which readout is correct (maybe two are erroneous due impact damage with birds) then make a logical decision using all the information to hand. Methodically.