Airbus A320 With Eurofighter Nose Enters Service as Radar Laboratory

A former passenger Airbus A320 fitted with the pointed nose of a Eurofighter Typhoon has entered operational service as a flying radar laboratory. The German Aerospace Center-owned aircraft, registered D-ATRA, completed commissioning flights at Airbus’s Manching facility in Germany, where engineers confirmed that the modified jet and its radar function together as intended. Airbus confirmed the completed validation milestone on November 6.

The conversion gives the Eurofighter program a larger, longer-endurance platform for developing its new radar without depending exclusively on scarce combat aircraft. Operated by the German Aerospace Center, or DLR, in cooperation with Airbus Defence and Space, the A320 can carry engineers, instrumentation and workstations alongside the experimental equipment.

The aircraft will support airborne testing of the Eurofighter Common Radar System Mk1, an active electronically scanned array radar intended for German and Spanish Typhoons. Those aircraft include fighters associated with Germany’s Quadriga and Tranche 5 programs and Spain’s Halcón program. Airbus Defence and Space leads the radar program, with Hensoldt and Indra involved in its development.

Commissioning followed structural and ground tests

D-ATRA first flew in its new external configuration on January 21, 2025. The radar was not operating during that initial flight, which instead tested the basic airworthiness of the structurally modified aircraft. Engineers then conducted ground testing before moving to the commissioning flights that validated the aircraft and radar as a combined airborne system.

Attaching a fighter’s radome to an airliner required more than replacing the A320’s familiar rounded nose. Airbus reinforced the forward fuselage to carry the new section and installed hundreds of meters of data cables. The radar also required dedicated liquid- and air-cooling systems to manage its temperature during testing.

Inside the cabin, multiple workstations let engineers monitor the information that would normally be presented to a Eurofighter pilot. At the same time, they can examine the underlying hardware and software behavior in real time, supporting work on new software versions, operating modes and other radar functions while the system is in the air.

DLR also identifies the separation between the A320’s certified flight systems and the experimental equipment as an important advantage. Development hardware and software can be evaluated aboard the laboratory without making them part of the systems needed to fly the A320 itself. That arrangement gives the test team a controlled way to investigate changes before those changes depend on access to a fighter test aircraft.

Why an airliner works as a fighter-radar laboratory

A Eurofighter remains necessary for testing how the radar ultimately performs as part of the combat aircraft. The A320 laboratory addresses a different part of the development workload: it provides cabin space for specialists and instruments, along with longer test flights than a fighter can typically offer. Engineers can observe the equipment directly rather than waiting until after landing to retrieve and interpret every result.

That capacity can make repeated hardware and software development more efficient. A radar team can fly with the system, examine its behavior and gather detailed data without using a Eurofighter for every airborne trial. The laboratory therefore supplements fighter testing rather than replacing it, taking on development work for which an instrumented airliner is the more practical platform.

The jet’s path to this assignment is nearly as unusual as its appearance. Built as an A320-232 in 1997, it carried vacation travelers for Aero Lloyd and later Niki. DLR acquired the aircraft in 2006 and placed it into regular research service in late 2008 as the Advanced Technology Research Aircraft.

Before receiving the Eurofighter nose, D-ATRA supported research into aircraft noise, aerodynamics, alternative fuels, navigation, cockpit technology, wake turbulence, fuel cells and electric nose-wheel taxiing. Its latest conversion continues that research-aircraft career but gives it a tightly focused military-sensor role.

The concept has a precedent: Boeing modified its first 757 into a flying test bed for F-22 radar, sensors and integrated avionics. That aircraft had a broader avionics-integration assignment, while D-ATRA is centered on development of the Eurofighter’s Mk1 radar. With commissioning complete, the former holiday airliner can now begin regular flight operations as an engineering laboratory for the German and Spanish fighter programs.

By David Whitaker — Associate editor for AMI’s aerospace and drone systems desk, translating flight systems, aircraft programs, spaceflight, and UAV developments into accessible technical stories.