Originally Posted by
Lon More
Not applicable here as it's in a solid area of
Radnet cover
It is still applicable.
If there is only primary radar where an aircraft enters radar cover then the flight data label cannot be correlated with the primary return. By saying 'in radnet' you are saying that the aircraft was in secondary cover to become correlated. Also note that any break in primary cover longer than coasting parameter or an unexpected maneuver may decorrelate a primary from the flight data label.