For the benefit of the weekend warriors ( of which there seems to be plenty on this thread ), when you get an RA from the TCAS it is telling you that you could have as little as 15 seconds before impact,and is giving you 5 seconds to react to the warning.
I have yet to hear of a faulty RA from a TCAS and the apathy/attitude of the Cesspit pilot makes me hope and pray that he is not maintaining the standard he achieved in the RAAF, god help us if thats the standard of our air defence, mind you, he was only a trash hauler
