FDG135, Bergerie, AR, et al
For those still not convinced that dials have an advantage over tape displays consider a small simulator experiment involving tape displays and pilots who might not expect …
Night IMC, limiting performance takeoff, without FD / AP (MEL).
Engine failure before V2; then introduce the need to accelerate for an emergency turn.
You may only have one chance to learn.
Tape displays are adequate for many situations, particularly when supported by AT, AP, FD, but without these (or even with them) there can be a range of scenarios where combinations of training standards, levels of experience, and task demand, can erode human capacity so that even if only a little extra focus is required on a tape, it is too much; cf recent accidents, and
ASAGA.
DW, beware the assumption “
should”; in the conditions shown Mach is more important and can change by relatively large values vs a change in airspeed.