Originally Posted by
bill fly
Well I don’t agree, for me AoA is an anolog value, which can be related directly to vane angle much more easily on a dial, than yet another strip display.
The AoA display should be designed to support the pilot’s proper and effective use of it (whatever that is). It should be considered, not in isolation, but in the context of the rest of the flight display(s) and the instrument scan which the pilots are expected to conduct. Does any airline which has aircraft equipped with the AoA display have approved pilot procedures for its use? If a check ride was conducted, in which phases of flight would a pilot be faulted for failure to maintain awareness of the AoA display? If one were to evaluate the AoA display design, what measure of performance would be used? Considering the approved Boeing EFIS with the AoA in the upper right corner, how does that fit Basic T flight display philosophy? Of course it doesn’t, because AoA was never part of the Basic T. But if there was a logical, task performance-based purpose for the AoA display, why would it be placed above the altitude display, about as far from the airspeed and attitude indications as it could be? Yet, we suppose it enhances safety?