Recently we have seen a lot of codes used to unlock our products being offered for discounted prices. Almost all of them are bought using stolen credit cards. These codes will all be blocked by our systems and you will have to try to get your money back from the seller, we are unable to assist in these matters. Do be very careful when you see a deal that is almost too good to be true, it probably is too good to be true.

Jump to content
Sign in to follow this  
TrevorS

VNAV advisory

Recommended Posts

Hi Hans

 

I posted this problem way back in September 2017 and was told that it was on your to do list after the LNAV issues were corrected.

_____________________________________________________________________________________________________________________________

This still appears to not be working properly. I did a flight from EBBR to EDDM in the -700.

The distance from TOD appeared on the MFD (in VNAV mode) 49nm from TOD. The time to TOD was also displayed.

Then at 27nm to go, the distance got "stuck" at 27 nm ( no longer decreased) to go but the time continued to count down to 1 minute.

 

There also seems to be no correlation between the snowflake on the ADI and the blue doughnut on the VSI.

Surely the snowflake should appear at the top (like a GS indicator) and as you get closer to the TOD, it should move down to the centre when you reach TOD. At this point, the blue doughnut should start moving

on the VSI to indicate rate of descent required. I believe the original Wilco CRJ worked like that. Makes sense.

 

I also found the snowflake to be very "jumpy" at times. It also disappears and then reappears during DES as does the blue doughnut.

____________________________________________________________________________________________________________________________

Just did a flight from EDDB to LOWW and the problem is still there.

Is this problem ever going to be resolved?

 

 

Regards

Trevor

  • Upvote 1

Share this post


Link to post

wow, you post a thread at 8 o'clock in the evening and at 11PM you complain about missing support already.

You must live in a very nice world where everything always happens immediately, I also want to get there! Could you advise me on the right way?

  • Like 1

Share this post


Link to post

@TrevorS, his sarcasm is necessary and very much to the point! This forum is not my life. You will have to accept the fact that I occasionally do pointless things like work, sleep or watch a movie.

 

Now to your question: Advisory VNAV has received a major rework months ago and was tested for quite some time during a lot a flights. By myself and by the people who volunteered for testing. Advisory VNAV (snowflake as well as blue ball) are only displayed while you're in a 3 degree corridor around the optimal descent path. And like with the glideslope of an ILS, the closer you get to the end of the descent path segment, the smaller this 3 degree corridor becomes. That's what you describe as twitchy. Back in 2017, the corridor was calculated waypoint by waypoint, now it's calculated constraint by constraint. It's much more precise and much less twitchy than before.

I can't comment on the T/D distance issue as I've never seen that problem. I usually just look at the green dot on the MFD and that moves totally fine without getting stuck.

  • Upvote 2

Share this post


Link to post

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this  

×
×
  • Create New...