Navy asks BAE Systems to build 283 IFF transponders for military fighter jets, trainers and helicopters


PATUXENT RIVER NAS, Maryland – US Navy avionics experts are asking BAE Systems’ Electronic Systems Segment in Greenlawn, NY, to supply hundreds of identify friend or foe (IFF) transponders for military aircraft as part of an order for $17.9 million announced Monday.

Naval Air Systems Command officials at Patuxent River Naval Air Station, Maryland, award this contract amendment to BAE Systems, which involves IFF transponders for jet fighter-bombers, helicopters, trainer aircraft and transport aircraft. IFF transponders transmit coded messages that identify aircraft as friendly and determine their range and bearing from interrogators on the ground or in the air.

The order calls for BAE Systems to supply 283 AN/APX-117A, 118A, and 123A(V) Mode 5-capable AN/APX-117A, 118A, and 123A(V) Common Identification Digital Transponder Systems and Shop Replaceable Sets for fixed-wing aircraft and navy, army, US allied helicopters.

The AN/APX-117A(V), AN/APX-118A(V) and AN/APX-123A(V) are part of BAE Systems’ Common Transponder (CXP) family which is the Navy’s standard transponder and of the Army for all new aircraft and aircraft upgrades.

Related: Mode 5 Identify Friend or Foe (IFF) Avionics for Small Unmanned Aerial Vehicles (UAVs) Offered by Sagetech

The transponders are built on an open system architecture and high-density field-programmable gate array (FPGA) technology that provides system flexibility and future system enhancements through software-only upgrades.

The CXP family of IFF transponders are configured to replace all AN/APX-100, AN/APX-101, AN/APX-108, AN/APX-64, AN/APX-72 and AN/UPX-28 transponders. All CXP transponders weigh less than 12 pounds with built-in cryptography and measure 5.375 x 5.375 x 8.375 inches. Their radio control units measure 5.25 by 5.75 by 3 inches.

On this order, BAE Systems will perform the work in Greenlawn, NY; and Austin, Texas, and is expected to be completed by December 2022. For more information, contact BAE Systems Electronic Systems online at baesystems.comor Naval Air Systems Command at


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