I am having this issue, or I think it's this issue, the thread seems to waffle about lateral and vertical navigation along the way.

I have no issue with NAV, my problem is that descent does not commence at TOD, this is not the approach per se, I'm wondering if I am misunderstanding, or there is a confusion of terms. In a G1000 system, at cruise you lower altitude setting, enable VNAV within 5 min of the TOD and it will automatically descend right, it appears that that should work in this case but it does not 😞 

The problem with this setup is that BS does not cover the details of the GTN because it's PMS or TDS's, but TDS also does not give some specifics about what to do either, and it seems to me to be sort of a hack they've done to get this all to work without clearly documenting how it is all supposed to be used.

Thanks for any assistance!

The KA350 AP does not seem to have a VNAV mode, unlike the G1000, so you have to manually control the descent down to the point where the APR AP mode can intercept the Glide Slope.

You can use the VNAV screen on the GTN750 to guide you down with the required rate and vertical deviation values.

Edited November 10, 20223 yr by Matchstick