Well I'll still be following the TCAS. We have yet to see anything concrete on the TCAS status of the Tu154, or whether or not it issued an RA, or whether or not it was followed were it issued. That, to me, means there is no evidence of a TCAS failure in this situation. A smoking hole in the ground there may be, but until such time as there is proof positive of a TCAS failure I'll go with the untold number of potential collisions averted rather than the one incident in which it may have been a causal factor. What I think we will see is an increased awareness of the risks of high climb/descent rates when proximate with other traffic and a reduction in the number of RAs as a result. Perhaps its time to specify maximum as well as minimum rates of climb and descent in congested airspace?