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Approach selection resets following external GPS connection loss


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DaveWhite
DaveWhite
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SkyDemon v3.13.3
I am using an external GPS source (SkyEcho2) connected to a Samsung Galaxy Tab A via wifi.

I sometimes experience temporary (5-15 second) GPS signal loss, which I suspect is a tablet issue and am investigating further - the purpose of this post is to describe SkyDemon behaviour when that happens and an approach has been selected for a destination airfield.

When the external GPS signal drops out and returns, SD behaves mostly as expected and a seamless re-connection occurs (depending on the length of dropout I see the message counting number of seconds without a signal until reconnection).

However, if an approach has been selected, the selected approach is lost at this stage, and needs to be re-selected as though for the first time.

This is a slight annoyance but it would be good if SD could retain the selected approach following an interruption of GPS signal reception.  Is that a simple fix? 

Tim Dawson
Tim Dawson
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Can you confirm this is an approach you've explicitly selected, from the Airfield Brief at the bottom right? Presumably a standard VFR circuit join approach?
DaveWhite
DaveWhite
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Yes, that's right.  In my most recent experience, I was approaching Turweston and selected the 27RH approach. 

I had a GPS connection dropout (SkyDemon alert banner showing without signal for >10 seconds and counting up).  The signal returned after est. 12 seconds and all Navigation was then as before - except that the approach sub-window had reverted to "Select Approach"

Tim Dawson
Tim Dawson
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Unfortunately this isn't going to be something we can address in the short term. There are a number of situations where the approach can be reset and we need to fully reproduce your situation to be sure of which one we are addressing, and its potential side-effects. We will come back to it in a few weeks.
DaveWhite
DaveWhite
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Thanks,Tim. I don't think it's more than a relatively minor annoyance when it happens and doesn't appear to happen for everybody anyway. Resolution in a few weeks sounds good.

Would any data from the Turweston flight be of use to aid in an investigation to reproduce?

Tim Dawson
Tim Dawson
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No thanks, we just need to set up an environment with an appropriate hardware device I think.
Francoisvl
Francoisvl
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Hi there - I have the same problem when practising using Prepar3d - the GPS keeps disconnecting, and SkyDemon forgets the approach. Not sure what the best way to connect SkyDemon to Prepar3d is but the 'x-plane' way does not work well. The virtual radar also keeps resetting and dropping out. Is there a preferred/tested way of using Prepar3d to practise flights connected to SkyDemon?
Cheers in advance for any advice. 

GO

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