They are a safe working solution to access the top of the engine under the cowl, pylon and many other difficult areas such as above the wing, aircraft nose or horizontal stabilizers.
Hydraulic pitch and height adjustment with a mechanical spindle allow a perfect positioning when servicing many areas of your aircraft.
Bumper pads on the steel structure, mechanical stabilizers and a drawer for tools, protect the aircraft while the ladder is in use or in approximation movement.