ILS and VNAV

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Hi guys pretty new and just using the mobile app. I see the VNAV button but I can’t figure how I add altitudes to the fixes?
Also I wanted to try landing in very low visibility. Does the game have ILS? Thanks

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You first need to add fixes to your flight plan, and select the fix in your flight plan. at the bottom there is a OPT. Button that you can use to set alt. As for ILS, there’s definitely a video on YouTube that walk you through the process.

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Hello @Alexander04 and welcome to the community!

To address your query, let me provide some insight into how VNAV and ILS work.

  1. To activate VNAV, you first need to file a flight plan, which should include altitudes. To make this process easier, we use a platform called Simbreif, where you can easily generate real-world flight plans that include altitudes, as well as SIDs and STARs for your route. Once your flight plan is generated, go to your Infinite Flight game and select ‘Load from Simbreif’. Once that is done and your aircraft reaches cruising altitude, you can engage VNAV, which will then manage your descent. However, always ensure you’re actively monitoring the aircraft when VNAV is activated, especially when entering controlled airspace on Expert server.

  2. The game also supports ILS. To use ILS, you can either engage APPR mode or perform a manual landing. In low-visibility conditions, it’s recommended to use APPR mode, as it will safely guide your aircraft to the runway. For a detailed guide on using the APPR landing mode, check out this excellent video tutorial. If you prefer to manually fly the ILS approach, make sure to follow the G/S (Glide Slope) and LOC (Localizer) indicators displayed on the HUD.

Hope I was able to answer your queries. Reach out in case you would like to discuss more. Happy flying!

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Thanks that’s really helpful! Would love to discuss more though :). How does the transition work from having both LNAV (gps) and VNAV engaged to then engaging APPR? I see both VNAV and LNAV disengages when I engage APPR. How is the heading and v/s then managed. Does the plane follow the current heading at the time until intercepting the localizer og how is the heading controlled at this point? I’ve done a few flights using APPR and every time I’ve stabilised on 3000ft with 0 v/s which works, but can you have a negative v/s of 500ft/min let’s say while trying to intercept the glide slope? Also, how do I know the exact dimensions of the glide slope? I’ve just used 3000 ft as it was recommended in the video. Thanks!

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And one more following up; can you do the appr fully automated in crosswinds too? I tried without interrupting but the 737 max 8 drove off the runway

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It maintains your current altitude and heading. However you can change those values at anytime until APPR intercepts the localizer and glideslope.

Yes. When you arm APPR it’ll change your VS to 0, but you can change it back to -500 if you’d like.

The standard glide angle is 3 degrees, meaning, when you are at top of the cone, be at 3000ft AAL. You can rarely go wrong with this. If you go to ifatc.org, then press “Map” → insert your desired airport → press “Approach” → and then “Glideslope”, it’ll tell you the glide slope altitude at specific points, so make sure to be below that.

When using APPR, the autopilot will manage your elevators and ailerons up until touchdown, you’re fully in control of the plane on the ground. You also have to manage speed and rudder yourself the whole time.

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Amazing. Thanks so much I’ll keep trying it!!

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Welcome to the community @Alexander04 !

(@Cody_M, the following reminds me of your comment #30 in your features topic We need to rethink the 'Infinite Flight autopilot')

If you’re following the recommendation to approach the glideslope intercept from below the glideslope, as you said, it does seem to zero any positive or negative value set for VS (the recommendation in the tutorial video of course is to fly to the intercept in level flight, VS 0).

But if you attempt to intercept the glideslope from above, from testing, I see the VS value doesn’t ever change after selecting APPR.

So, if your set value of VS is not a steep enough descent to catch the glideslope from above, you obviously will overfly the runway.

If the VS is steep enough (for the value remaining after hitting APPR), as you start to intercept, the number set for VS still doesn’t change but the APPR function will separately adjust vertical speed to attempt to intercept the GS.

I’ve tried VS -3500fpm or more, and it will still try to intercept when the GS comes alive.

I have often successfully made such intercepts from above (sometimes re-adjusting VS a bit as the intercept approaches).

But descending to the GS is not recommended in the video tutorial, likely because it can introduce various problems if you are not careful.

It is best to master approaching the GS intercept from below, with VS 0 as recommended.

I somehow didn’t know (or remember maybe) that you could still change the heading.

@Alexander04 , further above was in relation to your question:

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