ptds wrote on Dec 24^th, 2011 at 3:23pm:

Mark , Cerberus, Time of day may be an issue to consider as well, I use Bournmouth in the UK as my default airfield and some times I have no Weapons AI traffic. I think it is not until PM that planes come and go. I think you can download the traffic files somewhere and see what times AI planes should be about at your airfield. Just a thought. Pete

I have used both local and Universal time and downloaded the 'Weapons sceadual' so it can not be a factor.