The installed engines are made in Czech Republic and have either been manufactured for ground use or factory modified by power adjustment.
The engines are operated according to their technical status, which is periodically checked during prescribed annual inspections.
Speed of ADD output gases amounts to 310 meters/second at thrust 1100 Newtons, speed of ADE/ADE 2 output gases amounts to 420 meters/second at thrust 6500 Newtons.
