Just goes to show a near miss could happen any where any time. My fear has been in and around any aerodrome and the accuracy gps provides with recipricol tracks. This "see and avoid" concept has too many flaws and relies on luck as what happened with this incident. TCAS sounds great and look forward to using it.
One question to those who use TCAS OCTA away from a radar environment. What is the temptation to become your own Air Traffic controller? I have heard stories of lazy types saying things like....."that's ok we have you on tcas, we will continue our climb, gday" and even times where nothing is said at all even though the tcas equipt aircraft is crossing anothers track on final within say a 10nm seperation? These tcas equipt guys I sense get a nice warm fuzzy secure feeling and can disregard acceptable seperation standards. I have a feeling this problem is creeping in. Again a problem that could cause more problems.