Research Aircraft

AT-One operates a wide variety of test aircraft, it’s Europe’s largest civilian research fleet of aeroplanes and helicopters. The test aircraft are equipped with a large array of test equipment and can be modified according to the needs of specific research tasks.

Airbus A320-232 “D-ATRA”

The Airbus A320-232 “D-ATRA”, the latest – and largest – addition to the fleet, was deployed by the DLR in late 2008. ATRA (Advanced Technology Research Aircraft) is a modern and flexible flight test platform which sets a new benchmark for flying test beds in Europe. More…

ACT/FHS Flying Helicopter Simulator

The ACT/FHS ‘Flying Helicopter Simulator’ of the DLR is based on a standard Eurocopter EC 135 type helicopter, which has been extensively modified for use as a research and test aircraft. The mechanical controls, for example, have been replaced by a fly-by-wire/fly-by-light flight control system. More…

Dornier Do 228-101 D-CODE

The Dornier DO 228-101 (registration D-CODE), an airborne universal research platform, is used by the German Aerospace Center (Deutsches Zentrum für Luft- und Raumfahrt; DLR) for an exceptionally wide range of experiments. More…


Cessna Citation II

The Cessna Citation II (PH-LAB) is one of the research aircraft operated by NLR Flight Test Operations

A Cessna Citation II laboratory aircraft for flight testing of systems, sensors or procedures from and for our customers. The Citation is equipped with a state-of-the art cockpit with options for testing customer displays (certified and experimental), controls and concepts. More…



HeliTech is a RPAS helicopter which enables NLR to facilitate testing of large sensors and provide pilot training for heavy-class RPAS.
This helicopter (PH-1AP) has a maximum take off mass of 40 kilogrammes, a rotor diameter of 2.6 metre, and is equipped with a gas turbine engine. More