The Blue Avionics BA-440 Router/Filter provides Flying Colours with the transponder interface and ARINC 429 monitoring for their supplemental type certificates (STCs) of Automatic Dependent Surveillance-Broadcast (ADS-B) solutions on Bombardier Challenger 600-2B16 (604 and 605) aircraft with Rockwell Collins Pro Line 4 and 21 flight decks with TDR-94D (-500 series) transponders.