Aviation Headset Adapter Cable GA headset to Helicopter With this adapter you can convert your Dual GA plugs headset tohelicopter plugs. (Convert general aviation plugs PJ-068 and PJ-055B or equivalent to U-174/U or equivalent helicopter plug) Easy to use, no need to set up, plug and play. Adopts high quality material, study and durable. Portable and compact size, easy to carry anywhere and anytime.