kap 140

Hello, Today, my autopilot Bendix KAP140 (Installed on a C172 Skyhawk + G1000) got an issue: The pft (pre-flight -test) is ok + tone but it displays 5 digit (dash) instead of pressure. I try to push baro button, an turn knob, but it seem to "freeze" and I can't enter any digits. For...

I have a 2003 Cessna T182T (non-G1000) that has a KAP140 AP. The ongoing problem I have is that after a period (time varies) in flight using the AP the aircraft will start to drift left of course regardless of whether it is in HDG or NAV mode. It won't respond to the HDG bug. I have to...