This is a serious query, it is certainly NOT a joking matter.
I am not very familiar with the TCAS system, however I am curious as to the reason that this is another Virgin Blue incident.
Is it just bad luck, or being in the wrong place at the wrong time, or IF there is the ability to set limits on the TCAS?? Do Virgin Blue have different criteria/values set to say Qantas?
What I mean is do Virgin Blue have their TCAS warnings set at too fine, thus causing them to get more warnings than other carriers??