Trig's complete stack system provides the easiest solution to upgrading out-dated avionics. A slimline design saves valuable space while still providing practical features. The Complete Stack System includes all necessary trays and installation kits.The Complete Stack consists of the following components:TMA44 - Standard Audio PanelTX56A - Nav/Com UnitTY96A - VHF Transceiver RadioTT31 - Mode S Transponder
