"Roger" wrote:
Once the bank axis is active, the altitude hold
function is available.

Mine must be broke. I can turn on alt hold with out the heading being
active. It doesn't care which sequence I use other than it takes a
minute or so before the altitude hold works after turning the AP on.

When you press the "On/Off" button, the roll axis is active (you can control
the turn rate by twisting the knob). The altitude hold function is then
available.

--
Dan
C172RG at BFM