Bose A20 LEMO to Helicopter Jack Adaptor

If you fly helicopters you’ll most likely be looking for a headset with a single plug. It’s slightly shorter and fatter than either of the fixed wing plugs. This single plug (7.1 mm / 0.281 inch diameter) provides both microphone and audio to the ear cups. It’s generally known as a U-174/U plug or the U-93A/U plug (Nexus TP120).

If you are flying an Airbus or select ATR aircraft you might find a single 5 pin XLR connector. This XLR connector provides power, microphone and audio to a 5-pin XLR equipped headset. We have a variety of Airbus Headsets.