Hi All:I purchased the Flight1 Cessna 421 turbo prop earlier this year and installed it on both Fs2002 & Fs2004.I have just recently started using FS2004 and when I check the TCAS screen the word FAILED in yellow letters fills the centre of the screen.When using it with FS2002 prior to uninstalling FS2002 the TCAS worked with no problem.Can someone tell me if the problem is related to something I have missed.Everything else about the plane works as advertised.Thanks for any assistance.Kenny G.

Nick will be addressing this. It is because of the FS 9.1 update. Stand by for more info...