Sharpie, I think this is the way the ICAO grading works. Cat 1 means OK to fly anywhere, only subject to the usual bi-lateral route agreements etc. Cat 2 is OK between countries in agreeement e.g. Australia accepts Indonesia but JAR-land and FAA does not. Cat 3 is a no-no outside the offending country's borders, i.e. aircraft on that registry are banned from all international activity. Now, it may be different in Africa, where I guess adjoining countries could be cat 3 and if they happen to be not shooting at each other this week maybe they just get on with it.