I'm in the new JG53 on the Knights side... I don't know if we are an FSO squad or not. I don't think so. Can I fly a Bf-109F4 anyway?
not unless you're in a squad that is registered to fly in the fso or you can get a ride with a squad flying axis in the fso. and the squads do not know what ride they will get until the orders have been sent out.
*edit* jg53 does not show up in the fso logs so, it doesn't look like your squad is registered to participate.