symbol

[Airmad]

please help me, when aircraft symbol turns to a small circle with an X inside what do's it
represent ?

[Allocator]

please help me, when aircraft symbol turns to a small circle with an X inside what do's it
represent ?

No heading information being transmitted.  Sometimes aircraft give incorrect heading information which makes them look as if they are flying sidewards :-0

[Airmad]

Thanks Allocator, understand