IFD540/440 Touch Screen GPS/NAV/COM : Autopilot capabilities

Flying an ILS you will always want to switch to VLOC, so as to get a GS indication.

Flying a VOR or LOC (no GS), you could optionally continue to use GPSS to fly the lateral course, it is generally be more accurate than following the ground navaid -- keying on the assumption that 540 does not suppress the GPSS availability FAF inwards on such approaches.

I like having the GPS switch to VLOC automatically,, but to do the above, would need to switch it back for VOR and LOC approaches. Having a "PRECISION ONLY" setting for the auto VLOC switch would eliminate the need to manually switch it back for those.

This is not a critical issue, but it might be a nice little thing to add. On the face of it might not be too hard to do.

* Orest