AT-One operates a wide variety of test aircraft:
- Airbus A320 ATRA (Advanced Technology Research Aircraft)
- Cessna Citation II
- Dornier DO228
- Fairchild Swearingen Metro II
- Eurocopter EC135 FHS (Flying Helicopter Simulator)
- Eurocopter BO105 ATTHeS (Advanced Technologies Testing Helicopter System
The test aircraft are equipped with a large array of test equipment and can be modified according to the needs of specific research tasks.