Teledyne 843347-3 Fault-Function Indicator Panel

The Teledyne 843347-3 Fault-Function Indicator Panel is a cockpit fault annunciator used in aircraft monitoring systems to visually display faults, warnings, and the flight status to the crew. It is designed for installation in aircraft cockpit instrument panels or avionics assemblies, enabling centralized fault and function indication across cockpit warning systems, flight instrumentation, and avionics control panels for both military and commercial airframes. Manufactured by Teledyne Technologies Inc., the part number is 843347-3 with NSN 1680-21-901-1649 and Federal Supply Class 1680, and it is supplied as a genuine Teledyne aircraft component for maintenance, retrofit programs, and replacement of defective cockpit indication assemblies. Common replacements include Teledyne 843347-1, 843347-2, and 843347-4, and typical users include maintenance technicians, avionics repair facilities, and aerospace system integrators who require reliable fault annunciation and system status indication as part of aircraft maintenance programs and monitoring systems, cockpit warnings, and avionics diagnostics.