Pilot USA PA-89H/A20 Bose A20 (6-Pin LEMO) to Helicopter Adapter

Pilot USA PA-89H/A20 Bose A20 (6-Pin LEMO) to Helicopter Adapter

The Pilot USA PA-89H/A20 adapts Bose A20 6-pin LEMO headsets to helicopter U-174 style audio jacks. Durable and compact, it preserves clear transmit/receive functionality for rotorcraft ops.

Key Features & Benefits

• Adapts Bose A20 6-pin LEMO headset to standard helicopter U-174/U connector
• Maintains full transmit and receive capability for headset communications
• Compact, lightweight design for easy storage in flight bags or cockpits
• Rugged construction and reliable contacts for consistent in-flight performance
• Ideal for helicopter operations, training flights, and single-ship transfers
• Simple plug-and-play installation — no tools or wiring changes required

Detailed Product Description

The Pilot USA PA-89H/A20 provides a straightforward, aircraft-grade interface between the Bose A20 headset (6-pin LEMO) and helicopter communications equipment that uses the U-174/U single plug. Designed with rotorcraft use in mind, the adapter preserves the Bose A20’s voice clarity and microphone functionality so pilots and passengers maintain reliable two-way communications. Its compact footprint and lightweight build make it easy to stow or carry in the cockpit without adding unnecessary bulk. Built with dependable connectors and strain relief, the PA-89H/A20 stands up to repeated insertion cycles and everyday operational use. Whether you’re moving a headset between fixed-wing and rotary aircraft or equipping a back-up comms setup, this adapter ensures compatibility while keeping audio quality consistent.

Connector 

• Input: Bose A20 6-pin LEMO connector
• Output: Helicopter U-174 / U single plug (standard rotorcraft audio jack)

Technical Specifications