Anybody else seen this?

[flanker]

Fo some reason odd flights display a strange symbol made up of a small circle with an 'x' in it rather than the normal aircraft symbol as in the screenshot with COA5 - anybody else seen this?

[Allocator]

This means that there is no heading (or track?) information being sent by the aircraft, so RB does not know which direction to point the aircraft symbol.

[flanker]

ok, that explains it. Thanks.