You should use the dials first to set the intended altitude. Then ALT and AP. Otherwise it’s trying to head for the default altitude until you change that dial which in some planes for instance is like 5000 feet I think.
You should use the dials first to set the intended altitude. Then ALT and AP. Otherwise it’s trying to head for the default altitude until you change that dial which in some planes for instance is like 5000 feet I think.