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

Print Page | Close Window

IFD Trainer and VLOC approaches

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=2074
Printed Date: 27 Apr 2024 at 9:53am
Software Version: Web Wiz Forums 12.01 - http://www.webwizforums.com

Topic: IFD Trainer and VLOC approaches

Posted By: daveS
Subject: IFD Trainer and VLOC approaches
Date Posted: 21 Sep 2020 at 10:43pm

I am going to KDLS and it has an LDA approach so I thought I’d run it in the trainer. The simulation worked fine at first with the mode starting at GPS->VLOC. At the FAF, the mode changed to GPS instead of VLOC. I tried several times and this remained the behavior. I then tried the ILS at KTKI and it did the same thing. The options are set to auto switch and auto load.

Bug in the Trainer?

-------------
------------
dave

Replies:

Posted By: dmtidler
Date Posted: 22 Sep 2020 at 11:19am

I don't believe it is a bug; the IFD Trainer does not appear to simulate any navaids. In order for VLOC to engage automatically, two of the six requirements are:

the Morse code decoded by the tuned nav radio matches the identifier of the approach navaid
the radio deviations are at most 50% of full scale for 5 consecutive seconds.

Without a simulated navaid, neither of these conditions can be met to allow the automatic transition to VLOC.

Posted By: daveS
Date Posted: 22 Sep 2020 at 11:30am

I guess that make sense but I was assuming/hoping that since this was a simulator that the app would assume the navaid was valid. Not a big deal -- just have never actually done an LDA and don't want any surprises.

-------------
------------
dave