IFD 5 Series & IFD 4 Series Touch Screen GPS/NAV/COM

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Missed approach using vectors

Printed From: Avidyne
Category: Avidyne General
Forum Name: IFD 5 Series & IFD 4 Series Touch Screen GPS/NAV/COM
Forum Description: Topics on Avidyne's IFD 5 Series and IFD 4 Series Touch Screen GPS/NAV/COM
URL: http://forums.avidyne.com/forum_posts.asp?TID=978
Printed Date: 19 May 2024 at 3:06am
Software Version: Web Wiz Forums 12.01 - http://www.webwizforums.com

Topic: Missed approach using vectors

Posted By: bcool
Subject: Missed approach using vectors
Date Posted: 27 Feb 2016 at 7:17am

Greetings! I'm close to being a new owner of an IFD540 (it's being installed even as we speak), and I'm very excited!!

While trying things out on the simulator and reading the manual, I couldn't find instructions on what to do for the following scenario, which happens to me all the time when practicing approaches:

ATC usually gives me "missed approach instructions" to follow, rather than having me fly the published missed (unless I ask for it).

What's the proper procedure for dealing with this on the IFD? Either when flying to an IAF on my own, or with vectors to final? And then, how do I sequence back for another go at it?

I can't figure out how to fly a VTF approach on the simulator to try it, because I can't deactivate the autopilot - maybe I'm missing something?

Replies:

Posted By: oskrypuch
Date Posted: 27 Feb 2016 at 8:51am

The simulator will always just follow your FMS laid out course, so you can't fully simulate custom missed instructions.

In the air, you just use your navigation instruments as usual, fly a heading, to a navaid, etc.

To sequence to the published miss, you must be on the FMS page, and then push the MISSED soft key, bottom left. You can, in the user settings, set it to auto-sequence on reaching the MAP.

There is also another option usually shown, on a soft key, to try the approach again, which will sequence your flight plan back the IAF.

Is that your question?

* Orest

Posted By: DavidBunin
Date Posted: 27 Feb 2016 at 9:05am

I think if ATC gave you a custom miss that takes you to a waypoint (as opposed to instructions to "Fly Heading XXX") then you could enter that waypoint into the IFD flight plan (after the published miss) and then go direct-to the waypoint you entered when you miss.

If the instructions are to fly a heading and climb to an altitude, then you're outside (off) the IFD flight plan no matter what you do.

David Bunin

Posted By: mfb
Date Posted: 27 Feb 2016 at 9:19am

As Orest said, the simulator doesn't provide a way for you to control your own headings. It will simply fly what you have programmed, using its own headings.

So, if you want to practice a VTF approach you have to outsmart the sim by starting in the right place.

For example, if you want to practice an ILS to runway 36, start your simulated flight at a different airport about 10-20 miles southeast or southwest of the approach airport. Program the IFD540 sim with the origin and destination, then set up and activate the VTF to the ILS36. The IFD540 will show the extended final approach course of 36 and the simulator will take off, intercept the approach, and fly it. The only thing you're missing is the ATC vectors in your headset.

The sim won't do the GPS -> VLOC transition either. It doesn't seem to know about VORs and localizers.

Anyone know how to turn off the simulated traffic in the sim? The little airplane symbols buzz around like flies and are very distracting.

Mike

Posted By: brou0040
Date Posted: 27 Feb 2016 at 9:56am

bcool,

Others have already stated what to do with custom missed approach instructions. Since altitude terminated legs and vectors are already supported in published missed approaches, I've requested a new feature that would allow the user to add these types of custom missed approaches into the flight plan. The 540 has all the UI/buttonology required to do this (probably not supported by software in this manner), and already has the software to fly these instructions.

Posted By: bcool
Date Posted: 27 Feb 2016 at 11:24am

OK, I think I see what will happen if I'm doing a VTF approach. After going missed, hit the LSK for 'Try Again', following ATC's instructions to get me back to the approach.

I was wondering if it would keep the last approach active if I went missed, and it does...so it's cool :)