Anyone have any idea why half the RNAV approaches I shoot never capture the GP but start descending down to the runway like it is captured? Thanks for any input! 

What GPS?

bs

Yes using GPS. GP= Glide Path

23 minutes ago, John Snyder Jr said:

Yes using GPS. GP= Glide Path

Try this short explanation please.

 

Everything You Need to Know about RNAV GPS Approaches - FLYING Magazine

If you're talking about default aircraft without the WT G1000 NXis, then they don't work most of the time by default.  The WT stuff works fine.   Assuming you have the WT G1000 NXi (free from the marketplace which replaces ALL stock G100s) then you activate the APPR mode when on the way to the FAP (Final Approach Fix).

As to why it still continues down it may be you're in VNAV still with a lower ALT constraint so if the FAP has an ALT constraint then it might continue down.

Edited December 8, 20214 yr by Jeff Nielsen

21 minutes ago, Jeff Nielsen said:

If you're talking about default aircraft without the WT G1000 NXis, then they don't work most of the time by default.  The WT stuff works fine.   Assuming you have the WT G1000 NXi (free from the marketplace which replaces ALL stock G100s) then you activate the APPR mode when on the way to the FAP (Final Approach Fix).

As to why it still continues down it may be you're in VNAV still with a lower ALT constraint so if the FAP has an ALT constraint then it might continue down.

Actually I'm almost always in the TBM

9 minutes ago, John Snyder Jr said:

Actually I'm almost always in the TBM

Ok, it shouldn't work, as far as I can remember.  I'm pretty sure it isn't implemented yet.  WT has plans to do the G3000 once they get a stable feature set for the 1000.  Hopefully that comes fairly soon.  I'm not sure what their timeline is.

Edited December 8, 20214 yr by Jeff Nielsen

Yep, the Working Titles G1000NXi mod is what you want for RNAV approaches.  I like TBMs too, but if I can offer a replacement suggestion for complex IFR flying:  try the free G36 Turbo mod for the Bonanza.  It gives you a turbo-normalized bonanza (with a really nice flight model) that performs closer to the TBM in terms of speed and altitude (true out over 200kts in the teens), and uses a G100, which means when you install the NXi you'll have a fully RNAV approach capable box.