Originally Posted by
FearlessFreep
I used to prefer the single cue, it is pretty simple to follow. Now I hate them.
Supposedly the biggest difference between the systems is in the roll axis. What I have been told is that with the single cue system it is commanding a bank angle. On the dual cue it is commanding a rate of turn.
Definitely prefer the dual cue. Once you get used to that system it is way superior.
One of the benefits of the dual cue is that it is easier "to fly through the Flight Director" to quote one instructor. Say for instance that you need to do a immediate deviation or something over and beyond what was originally planned. You can easily see your way through the FD to do what you have to. The single cue is a bit harder to do that with.
There are numerous different flight directors out there, one I saw once, was two yellow paddles that would move up and down. On the airplane symbol there were yellow circles on the ends of the wings. I guess the idea would be that you would place the circles on the paddles. Strange.
Flying nowadays is more the AP following the FD since most people have the AP on/off @ 200'.
It was funny on the Diesel 8 because you could run the FD separate from the AP, so you could have the AP doing one thing and the FD doing something completely different.
I like flying with the FD & AP off, sort of a get back to basics philosophy!
YMMV!
I recall being informed that the reason dual cue was used initially was for four engined jets with pod mounted engines. Not commanding a bank at low altitude (CAT II and III) was considered a good idea. Not sure if that's true but it does make sense.