Marc_J._Zeitlin
Active Member
So, what's the outside reference for the pitch attitude? Ground? Flight Path (which would be AOA, so probably not)? And what's the aircraft reference - the "zero" incidence line of the EFIS? IOW, what are the two lines that are used to measure the pitch angle?No, pitch is not the same as AOA. Pitch is a specific pitch attitude, while AoA varies based on a number of different factors. Pitch is a commonly used mode of the pt. 121 aircraft I fly, and is completely different/separate from any speed-related modes.
Certainly sounds like the information is in the EFIS to do what you're asking... - just another parameter to close the loop on. And I agree that the IAS mode is a bit "hunty" - more in climb than in descent, for some reason, at least on my plane with the HDX A/P.