The aviation magazine AeroRevue has published an overview on the many cockpit display instruments available (PFD, MFD, EFIS), including the comment: “The widely used FLARM has become a must-have in cockpit displays (EFIS). Several EFIS manufacturers now offer an RS-232-interface to overlay FLARM-data on displays. FLARM can also be used as a passive kind of TCAS (known as PCAS) indicating traffic equipped with transponders only, as well as ADS-B.” The article can be read here (in German).
