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RNAV approach help and RAAS problem

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In the NGX, you can do an rnav approach by pressing the approach button on final and the airplane helps guide you in. But I could not activate the approach button on final to an rnav approach.

 

Also on approach the airplane did not tell me I was coming up to runway 08R at EDDP. After landing it did say I had X feet remaining though.

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For the first problem, the 777 isn't the 737. They don't work the same way, in the 777 you leave it on LNAV/VNAV for anything but an ILS approach. 

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So LNAV/VNAV engaged while on an RNAV approach gives me a glide slope?

I think he means you press the APP button to capture the LOC/GS

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So LNAV/VNAV engaged while on an RNAV approach gives me a glide slope?

 

No, it gives you an FMS computed vertical profile down to the stated MDA.

 

What you can do is if the runway does not have an ILS, you can select just the runway itself (instead of selecting ILS07L, just select 07 in the FMS), and it will ask you for a runway extension and whether to generate FMS generated glideslope or not. If you do this, you will be able to use IAN, and fly a fake ILS (note that you can NOT autoland, but you must disengage the autopilot at Cat. I minimums). You would be flying a NON PRECISION approach, and it requires Cat. I minimums or better (DH 200 ft, RVR 1800 ft). You will need to use other navaids as normal to monitor the approach - you can not use it in isolation.

 

Best regards,

Robin.

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I realize I wont get an autoland, but I am getting a glide slope guidance with the RNAV approach that I can see on the ND, I just have no idea how to get the airplane to let me follow it. I'm flying manually with the FD engaged, but it refuses to follow the rnav approach, it wants me to hold at the missed approach altitude I have set. In the NGX when I got close enough to the airport, I could press approach and it would give me guidance on the approach path and I have no idea how the 777 works.

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Ahh - that's because you must set the MDA into the MCP altitude window in order for VNAV to follow the vertical profile, otherwise you're trying to ask it to descend below the MCP set altitude, which it won't do.

 

Which approach is it you are trying to fly?

 

Have a look at this chart: http://dtpp.myairplane.com/pdfs/SE-4/00026RY10.PDF

 

If you are trying to use LNAV/VNAV for the approach, then the minima become: 1483/58 which means:

 

DA 1483 - Decision Altitude of 1483 ft.

58 - 5800 ft RVR required

 

To fly this approach, you would set 1480 into the MCP altitude and use VNAV to fly the descent path. If you reach 1483 ft and you do not have the runway in sight, go-around.

 

If you're going to continue the approach below DA, then you would disengage the autopilot and fly manually. It would also be a manual go-around with flight director for lateral guidance (this is where we really need two-crew!).

 

Best regards,

Robin.

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I could press approach and it would give me guidance on the approach path and I have no idea how the 777 works.

 

The 777 doesn't have IAN like the 737 does.

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Thanks Robin and Kyle.

 

You're welcome.  As for the RAAS issue, I'd check over at the RAAS Forum (under FS2Crew's AVSIM forum section).

 

If it's a new runway (newer than what was in the default version of FSX), you'll need to download and run the Make Runways tool from Pete Dowson's page: http://www.schiratti.com/dowson.html

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Thanks, but now after running the program, where do I put the files it output?

 

I don't believe this is the problem in the first place though, 08R at EDDP is not a new runway.

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Thanks, but now after running the program, where do I put the files it output?

 

So that download came with a READ ME file.  Did you read it?

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Yes but in the readme it says "after running the program to completion, just copy the files to their respective programs folders"

 

so I'm asking where those respective folders are located at.

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Yes but in the readme it says "after running the program to completion, just copy the files to their respective programs folders"

 

I'm honestly surprised you read it, but you went a little too far.  That's for all the extra features for other programs.

 

 

FSX, ESP, Prepar3D

------------------
Place the EXE into your the relevant main FS folder.
MakeRunways will find the correct Scenery.CFG file automatically based on
the EXE name it finds there -- FSX.EXE, ESP.EXE or Prepar3D.EXE.
 
THEN
----
Double click the MakeRwys.EXE file in Explorer to run it.
 
The files created are derived by checking all of the BGLs in all of the Active 
scenery layers with locally installed files, as defined in the SCENERY.CFG 
file.

 

Done.  :wink:

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I believe an RNAV approach refers to a glide path, not a glide slope.I've only tried this on the "other" 737NGX for which they have a tutorial or video on this subject.

Ron

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The 777 doesn't have IAN like the 737 does.

 

Huh? What is the option in the FMC all about then? I even tried it out already. :huh:

 

Best regards,

Robin.

Thanks Robin and Kyle. Both replies explain what I am missing.

 

You're welcome!

 

Best regards,

Robin.

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Well after running the program, and loading up EDDP, I get "approaching 08R" on the taxiway correctly, but then when I turn onto the runway it still says approaching 08R over again a few times.

 

Then when I take off, it warns me "on taxiway"

 

I am using Aerosoft EDDP

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Then when I take off, it warns me "on taxiway"
 
I am using Aerosoft EDDP

 

Sounds like you might have an old AFCAD somewhere (other than the Aerosoft data), or the Aerosoft data is misaligned somehow.

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No but the afcad is in a separate folder, aerosoft says it is for a reason. rather than being in the main scenery folder, it is in a separate folder...  aerosoft\afd

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No but the afcad is in a separate folder, aerosoft says it is for a reason. rather than being in the main scenery folder, it is in a separate folder...  aerosoft\afd

 

I meant a conflicting one.  Like, you installed your own AFCAD of the airport somewhere and didn't delete it before installing the Aerosoft version.  Either way, the Make Runways tool is reading from your sim.  So the problem can be found on your sim somewhere.  As I mentioned, it's either:

  1. A problem with the Aerosoft scenery
  2. An AFCAD you didn't delete prior to installing the Aerosoft scenery
  3. ...or some other scenery-related issue

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Some AI Traffic addons put their own AFCAD somewhere so that their AI traffic will taxi properly around airports (including taking highspeed exits properly instead of skidding to a halt and making a sharp turn on a 'reverse' highspeed exit). I have found this can make a conflict with the AFCAD's (because now there are 2).

 

AFCAD's like this don't effect what "you" see out the window, but RAAS will see it, and may have unintended effects. (like "you are now on 'taxiway' 31R" :P)

 

As I fly on Vatsim, I find these things to be annoying. (They have also showed up occasionally to make 'double taxiways' at some FTX enhanced airports in the UK)

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Huh? What is the option in the FMC all about then? I even tried it out already. :huh:

 

Best regards,

Robin.

 

You can still fly a RNAV approach (along with others.)  You just won't get the added features that an IAN equipped aircraft have,

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