On 6/20/2021 at 8:56 PM, ark said:

To be very clear, the GNS530 will do lateral navigation, including during the approach. What it won't do is capture the glide path and descend during an LPV approach (which is much like an ILS approach).

Al

It will in game at some airports (even when it's not suppose too). I'm using the GSN530 mod but use to do RNAV glidepaths with the stock GNS530 before. It depends on the airport. You activate the approach mode on the autopilot after the IAF and before the FAF and on airports that support it, you will get vertical control right down to the runway. With the GNS530 mod you also have to activate the approach part of the flight plan on it beforehand to get you to the IAF.

 

I made a replied more about it in a post about it at

 

Edited June 23, 20214 yr by Phantoms

18 minutes ago, Phantoms said:

It will in game at some airports (even when it's not suppose too).

That is a good description of the current state of affairs... Cannot wait for WT to do their magic overhaul 🙂

1 hour ago, Phantoms said:

It will in game at some airports (even when it's not suppose too). I'm using the GSN530 mod but use to do RNAV glidepaths with the stock GNS530 before. It depends on the airport. You activate the approach mode on the autopilot after the IAF and before the FAF and on airports that support it, you will get vertical control right down to the runway. With the GNS530 mod you also have to activate the approach part of the flight plan on it beforehand to get you to the IAF.

Thanks for the response.

I'm curious -- with what approach at what airport have you seen this?  And during the GP descent does the GP pointer on the HSI, or the GP needle on a VOR Head, respond as you would expect?

Al

Edited June 23, 20214 yr by ark

22 minutes ago, Bert Pieke said:

Cannot wait for WT to do their magic overhaul

How about bit level redevelopment to model the actual GPS, feature by feature, all characteristics? With true Garmin stability and reliability.

 

Edited June 23, 20214 yr by fppilot

34 minutes ago, ark said:

I'm curious -- with what approach at what airport have you seen this?  And during the GP descent does the GP pointer on the HSI, or the GP needle on a VOR Head, respond as you would expect?

Today, flying the Turbo Bonanza w/the GTN750 mod, I shot the RNAV Rwy 16 Approach into KMLF.  I don't believe there should have been any vertical nav with this approach, but it behaved as though there was (and did it as it should have if there was).  The GS mode activated and the marker appeared on the HSI display prior to the FAF - it descended, then the AP controlled the aircraft's descent path to the runway.

This was especially strange, as I have made a number of RNAV approaches that are supposed to have a coupled GS and get none, OR, I get a GS-coupled approach with no indicator, OR, a marker appears but doesn't descend, etc.

I don't know how the approaches are placed in MSFS, but I'm beginning to think that some of the issue has to do with the airport/runway coding?  In the Fly! world, I installed a number of approaches which required editing the Fly! navigation database.

1 hour ago, RandallR said:

I don't know how the approaches are placed in MSFS, but I'm beginning to think that some of the issue has to do with the airport/runway coding?

If that is the case, there could be a lot of fixes needed!

Al

I've seen comments regarding airport scenery that included (or did not include) ILS frequency data.  This apparently affects whether some nav systems automatically activate the proper frequency for an approach.

It then occurred to me that if a scenery designer is responsible for coding frequencies for approaches, there may be settings for the airport/runway that control glideslopes, whether ILS of RNAV w/GS.

In Fly!, all WPs, NAVs, ILS, NDB and runways were placed via the database.  When I installed a missing ILS, I entered it into the ILS portion of the DB and it was linked to the proper runway as recorded in the Runway DB.  All approach frequencies were also entered into the DB for the ILS.  Here, apparently, ILS frequencies are encoded with the airport, and I was wondering whether all GS data is too.  If so, part of our problem may be with airport scenery design and their connection with the runways (as we can go into one airport and the RNAV GS works properly where at the next one it doesn't).