David Clark Spring Assembly H9940 | OEM 40623G-50 Cockpit Communication Part of the official Boeing

Part of the official Boeing Heritage Collection

Side finger depressions provide superior stability during use

this earphone delivers the performance and reliability expected from factory-spec David Clark parts

FAA orders and aircraft specifications

CS2 Center Section

David Clark Spring Assembly H9940 | OEM 40623G-50 Cockpit Communication Part of the official BoeingDavid Clark Spring Assembly, H9940 OEM 40623G 50 OEM spring assembly from David Clark, engineered for structural support and mechanical alignment in H9940 headset systems. Part number 40623G 50. Authentic David Clark OEM Part: Manufactured for high compatibility and consistent mechanical performance. Built for H9940 Models: Designed specifically for headset systems using the H9940 configuration. Restores Spring Functionality: Maintains optimal tension