Originally Posted by Scott Hersha
Iím installing a new GRT autopilot (2-axis) on my RV4. I have a Horizon 10.1 and Mini-X, installed last year. The install manual suggests either one ďENGAGE/DISENGAGEĒ switch for both axisí, or two switches, one for each axis (roll/ trim). From those that have done this, is there a relative advantage in having the ability to select just one axis of the autopilot? Itís not a difficult thing to do, but should I have that option, + extra switch? Iím trying to imagine when I would want one axis without the other. My vertical autopilot will have the capability of VS, IAS, or VNAV for climbs or descents.
I had only the one and went back and added both since the other is a short cut on the EFIS for level flight and direction along with the 180 deg turn