FEATURES

• Air Traffic Control (ATC) Mode S Transponder
• Remote mounted and operated from a panel mounted control unit
• Utilized for both signal processing and monitor functions
• Consists of an L-band receiver-transmitter, configured to operate in a dual antenna (diversity) configuration
• ARINC 429 interfaces are provided for two-way communications with TCAS and the maintenance bus and one-way receive communication from the control unit, Air Data Sources and Flight ID
• All units meet the interface requirements of ARINC 735-2 which is required for proper CAS-81 operation and ARINC 604 which defines the interface compatibility of the Centralized Fault Data System
• Housed in a standard ARINC characteristic 600, 4 MCU, case with detachable side panels
• Connection to the aircraft wiring is made through an ARINC 600, Series No. 2, multiple-section connector centered vertically at the rear of the unit
• Ventilation and cooling are provided to top and bottom modules by a series of perforations in the covers
• The TRA-67A ATC Transponder is designed to meet the following requirements:   – Operate in an Air Traffic Control Radar Beacon System environment   – Meet Mode S requirements per ARINC 718-4   – Serve as an integral part of the CAS-81 Collision Avoidance System
• The TRA-67A Enhanced ATC Transponder is designed to meet the above requirements plus the following:   – Support DO-185A TCAS interface protocol   – Provide Downlink Aircraft Parameter messages   – Transmit Automatic Dependent Surveillance – Broadcast extended     squitter messages