"Sam Spade" wrote in message ...
Ron Rosenfeld wrote:




I've not noted a "step change" in my CNX80. The changes in sensitivity are
supposed to be gradual, and at the FAF I believe the "scaling" goes to
angular, to mimic an ILS. But maybe I've just missed it.
Ron (EPM) (N5843Q, Mooney M20E) (CP, ASEL, ASES, IA)

As I understand it, it first ramps down to 0.3 from 1.0 starting at 2
miles from the LPV FAF, then it does a continuous angular "ramp down"
from the FAF to the runway so it will be ILS-like close in. Have you
noted that doing small incremental "stepping" on an LPV IAP during final
approach?

You say LPV course widths ramp down gradually over some miles?
Should LNAV/VNAV approaches do the same?
Around the FAF, it's usually too busy a time to collect every detail.
If it's not a step change in course width, it seems at least pretty quick.
Quick enough to disturb my autopilot a small amount, it seems.
But the reason I asked was to learn if other CNX80 users see a similar effect.
So far, the answer seems to be "no".
The effect I see is small, though, so it could be ignored easily.

If the blame turns out to be on my autopilot, I could send it back
to Collins to get it re-calibrated.