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Flight Helmet Adapter for DPH GPH

Original price $285.00 - Original price $285.00
Original price
$285.00 - $285.00
Current price $285.00


The Flight Helmet Adapter allows you to connect the nexus plug of your helicopter helmet to the side port of your Bendix King handheld radio for easy cost effective communications on wildland fire incidents. This PTT aviation adapter uses the PTT button to key up your handheld radio and communicate through the mic in your flight helmet.


  • Bendix King DPH
  • Bendix King GPH
  • Bendix King DPH-CMD
  • Bendix King GPH-CMD
  • Bendix King EPH


Our flight helmet adapters are compatible with many helmets that use a Nexus U-174 connector. There are 2 common wiring standards for this connector. Our adapters use the Peltor wiring standard for this connector which is also compatible with NATO / UK (most civilian helicopter flight helmets in the US use this standard), however there are some flight helmets that use the NATO / US wiring standard for this connector. There are some slight differences in the NATO / US and NATO / UK connectors (pictured below) that will help you determine which connector your helmet has.

NATO-UK / Peltor U-174 Helicopter flight helmet communications connector.

The picture above is the style that this item is built for.

NATO-US U-174 Helicopter flight helmet communications connector.

This is a compatible connector, but not when wired to US military standards; however, many companies wire this connector to the Peltor standard. Some companies will even wire this connector to either standard based on customer preference.

While we can help you determine which connector you have, it is impossible for us to know exactly which wiring standard was used. While the vast majority of US civilian flight helmets are compatible, if you are still unsure, often you can find out from the manufacturer of your helmet which wiring standard was used. 


  1. What connector does this headset adapter use?
    Nexus PTT (M9177/5-1 U-94A/U)

  2. What wiring standard was the Nexus plug wired to?
    Our adapters are wired to Peltor or "Helicopter" standard.

* Also known as: ACS 988-3 Air Com NFES 5328 NIFC.

Awesome Because:

You can connect your Bendix King handheld radio to your existing flight helmet instead of buying a new headset!

Makes contracting with CalFire or USFS easier and less expensive.

Radio Compatibility
  • DPH
  • GPH

More Details

Flight Helmet Adapter, U174/U Connector and PTT for RELM BK Radios

  • Color: Black
  • Replaces Products: AABA1441
  • What's Included: Adapter