I guess it's not just the US that's touchy about its airspace. I've been having fun with the new Google news search, and came up with this story:
http://www.zwire.com/site/news.cfm?newsid=5443180&BRD=1467&PAG=461&dept_id=188527&rfi=6 The explanation of the problem is a little confused, though: it had nothing to do with a flight plan. In Canada, all *controlled* airspace between 12,500ft ASL and FL180 is class B, but class G airspace can also extend up to FL180. (Above FL180 is class A -- IFR-only -- as in the US). With Victor airways, control-zone extensions, etc., there's not all that much class G airspace in Southern Canada: in class B airspace ATC provides positive separation to all VFR and IFR aircraft, so the pilot needed an ATC clearance (not necessarily a flight plan) and needed to be using an encoding transponder. Understandably, ATC was a little pissed-off to have an apparently NORDO aircraft flying through its space without clearance, though having the US dispatch F-16s was probably overkill. All the best, David -- David Megginson, [EMAIL PROTECTED], http://www.megginson.com/ _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
