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PROG Page Computation Fault

Started by United744, Fri, 19 Jul 2019 02:09

United744

Hi,

There is a weird problem when you just enter a departure and destination airport, and enter some waypoints on the LEGS page. For some reason, the FMS is unable to correctly calculate distances.

From what I can tell, the LEGS page is correct, but the PROG page just goes nuts.

Steps to reproduce:

* Enter a departure and destination airport in RTE
* Enter a fix near the destination
* Observe the calculations

You can make it do all manner of strange things by just entering various fixes in the LEGS page.

https://i.imgur.com/lIRegMV.png

Holger Wende

Do you see the same.behaviour if enough fuel is on board?
It seems in you example you have 0 fuel at EGLL, so it's impossible to calculate reasonable progress.

Just an idea.

Regards, Holger

Holger Wende

Ok, fuel should not impact distance calculations.
Which LON fix did you select, i.e. what's the distance from your LON to EGLL?
What distances are shown in the legs page if you enter EGLL as well?

Hardy Heinlin

United744, which version?

This is a known bug and was fixed some versions ago.

United744


Hardy Heinlin

I can't reproduce this problem. Can you?

The latest is 10.84, by the way.

United744

Strange - I only downloaded it the other night!

I'll get 10.84 and report back!

United744