P3D v4 What would cause Auto Pilot Approach Mode to stop functioning?

Hey all,

Oddest issue. Approach mode will not work now. I broke it. Only on one of my planes. Any idea's on what to look for?

I tried copy/pasting in the Boeing 737 AP section from its config to my Lear but that did nothing. Still locked out of Approach Mode.



Resource contributor
1) Autopilot entries in the aircraft.cfg

2) Autopilot mode panel clickspot code or any background code related to the autopilot

3) Pilot error. Approach/Landing mode requires tuning the ILS frequency and setting the appropriate course, being in range of the localizer and intercepting at an angle of 45° from the beam and staying below the glidepath for an automatic intercept.
Thanks Bjoern.

One of my Beta testers found that it was running on NAV2. I thought AP APR only runs on NAV1. hmmm... What on Earth did I do?