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Which aircraft does VNAV function correctly?

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any aircraft that has a g1000 avioinic as you can replace it with the G1000 Nxi.

https://fsprocedures.com Your home for all flight simulator related checklist.

If you install the Working Title G1000Nxi you'll get mostly working VNAV in any aircraft with a G1000.  Well, with the caveat that for this weekend only, that's not the case as the current version of the Nxi released with a bug that breaks VNAV lol... update expected early next week. 

But generally speaking, the Nxi handles VNAV well.

Andrew Crowley

  • Author
8 minutes ago, Stearmandriver said:

If you install the Working Title G1000Nxi you'll get mostly working VNAV in any aircraft with a G1000.  Well, with the caveat that for this weekend only, that's not the case as the current version of the Nxi released with a bug that breaks VNAV lol... update expected early next week. 

But generally speaking, the Nxi handles VNAV well.

I tried the G1000Nxi the other day but didn’t see any difference. But that’s expected to be fixed soon?

Depending on when you tried it, maybe.  The one big missing feature of the Nxi (which should be coming soon) is the ability to select your own altitude constraint at any fix.  Right now it's limited to altitudes hardcoded into procedures.  Works great (except for this weekend) for flying arrivals and approaches. 

Andrew Crowley

Working Title have managed to get a G1000NXi hotfix on the Marketplace today - version 0.9.1 - which is said to fix the issue with RNAV.

(Just tested it with a couple of RNAV approaches and they do look to be working OK)

Edited by Matchstick

What is the basic premise of RNAV?  Is it the future?

bs

AMD RYZEN 9 5900X 12 CORE CPU - ZOTAC RTX 3060Ti GPU - NZXT H510i ELITE CASE - EVO M.2 970 500GB DRIVE - 32GB XTREEM 4000 MEM - XPG GOLD 80+ 650 WATT PS - NZXT 280 HYBRID COOLER

11 minutes ago, Boeing_Driver said:

One more question; Is it necessary to activate the approach for the VNAV to respect crossing restrictions or does it only require setting a lower altitude in the window?

Set the lower altitude, and arm VNAV initially.  Then arm approach.  Arming approach will track the actual RNAV glidepath when it comes alive, usually near the FAP.  VNAV is required to make the decent profile prior to the FAP.

I find it confusing that VNAV doesn't just track the GP too, and you need approach mode for that, but that is how the real avionics work.

Andrew Crowley

10 minutes ago, bean_sprout said:

What is the basic premise of RNAV?  Is it the future?

bs

It's the present.  I find it funny that young flight instructors today talk about VORs the way my generation used to talk about NDBs... as derelict relics of a bygone era.   😁

Andrew Crowley

Easy way to think about it.

RNAV - Autopilot mode that makes your plane follow your programmed route made up primarily of GPS waypoints.

VNAV - autopilot mode that makes your plane follow the altitudes your route requires between waypoints..

It's more complicated than that, but it is a reasonable way to look at it at a high level.

And yes, it is the future as it is no longer dependent on ground based stations like VORs and NDBs.

Edited by MDFlier

i9-10850K, ASUS TUF GAMING Z490-PLUS (WI-FI), 32GB G.SKILL DDR4-3603 / PC4-28800, GIGABYTE RTX5080 16GB WF OC 3 FAN running 3440x1440 

 

  • Author
29 minutes ago, Stearmandriver said:

Set the lower altitude, and arm VNAV initially.  Then arm approach.  Arming approach will track the actual RNAV glidepath when it comes alive, usually near the FAP.  VNAV is required to make the decent profile prior to the FAP.

I find it confusing that VNAV doesn't just track the GP too, and you need approach mode for that, but that is how the real avionics work.

From what I have observed today, the VNAV function works quite well, but the APPR mode is not. I tried two approaches in which the VNAV correctly initiated the descent down to about the last fix but the magenta diamond never came down and there was no vertical guidance to the runway (even after selected APPR prior to the FAF).

1 minute ago, Boeing_Driver said:

From what I have observed today, the VNAV function works quite well, but the APPR mode is not. I tried two approaches in which the VNAV correctly initiated the descent down to about the last fix but the magenta diamond never came down and there was no vertical guidance to the runway (even after selected APPR prior to the FAF).

That sounds like the bug that was introduced just last week.  Matchstick points out that today's update fixes it, which is nice.  I'll have to try it later.  Try to update the Nxi and try again. 

Andrew Crowley

  • Author
7 minutes ago, Stearmandriver said:

That sounds like the bug that was introduced just last week.  Matchstick points out that today's update fixes it, which is nice.  I'll have to try it later.  Try to update the Nxi and try again. 

Thanks. Just saw that and downloaded the update. Hopefully, that fixes it.

BD...It did not for me 50% of the time  (1.9.2)  

 

Edited by Eclex

Dave Swigert

 WIN 11  i9-14900KF  64 GB ram   Viewsonic 32"   60Hz 2K monitor   NVIDIA MSI RTX 4080S    Asrock Z790 
  

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