FS2002/FS2004 IVSI With TCAS II v7.0. This gauge now contains a full-fledged implementation of TCAS II version 7.0 (aka change 7.0 aka MOPS 7.0) logic, as specified by RTCA document DO-185A plus its amendments approved by SC-147A. Literally all features of the logic are implemented with the exception of TCAS/TCAS resolution advisory (RA) negotiation and Mode S ground stations. It is believed this is the most advanced TCAS II version 7.0 logic simulation in Flight Simulator. By Lee Hetherington.