Tim,
Thanks for the response.
I've re-toggled it, and is (and was) on.  I've never done this in flight but will give it a go. 
I've just simulated my last 40 minute flight I made over the weekend and couldn't replicate it (at the weekend it dissappeared after about 10 minutes out of Popham).  At this point I've only ever seen the issue whilst flying. I'll give you a call to discuss once I've tried it under 'Go Flying' conditions if I still can't replicate it on the ground.  


Failing that, happy to send you my iPad so you could have a look at it yourself, if you had the time - I only use it for navigation and can always try the iPhone or, ahem, the old 695! 

Harry

What is its setting under the Setup -> Instruments menu? Does toggling that setting make it reappear? Can you reproduce it randomly disappearing when simulating, perhaps with a change of orientation or over time? If you can help us to experience the issue ourselves we might be able to determine its cause. Thanks!

I'm using 3.2.1.1 in a Gyro and over the last few months my Virtual Radar has stopped working.  It will load up when I select 'Go Flying' but after a period (normally when I'm looking outside the cockpit), it dissappears.  A reboot of Sky Demon sees it return briefly.  As I ply around Farnborough and into Fairoaks I find the Virtual Radar feature hugely useful.

Have reinstalled the App a few times but it hasn't removed the issue.  A little flumoxed. 

Any thoughts?

Harry