Iposted this question in the Radio and Autopilot topic on April 27, but since no one seems to have seen it, I am posting as a new topic.
I can’t seem to be able to have both ATTH and either HSEL or NAV on at the same time. For example, if the A/P is on HSEL, and I manually adjust the pitch and throttle to get the climbing rate I want, then when I click on ATTH so that the A/P will maintain the current attitude, HSEL goes off. The same thing happens if I use CPL (to NAV) instead of HSEL. Has anyone run into this problem? Any solution?