The Steps have a fixed lower stairway. The upper stair & top-platform extend telescopically elevated via a hand operated hydraulic-pump and lift-cylinder. Two spring loaded Pawls, provide mechanical locking of the telescoping section at each of the additional full step-rise positions.
The stairway is mounted on a welded steel section chassis-frame. Construction is robust but is also light in design – saving time and effort when manually manoeuvring the Steps up to, or away from, the aircraft.
The step treads and top-platform walking-area are surfaced with grip-faced aluminium tread plate. Sliding side-rails with hand-operated spring bolts at both sides of the top-platform to facilitate opening the aircraft doors with the Steps interfaced with the Aircraft. A pivoting-section is fitted at the leading edge of the top-platform to compensate with fuselage contours.
Rubber buffering is fitted to the top-platform pivoting-section and to the leading edges of the sliding side-panels. The standard unit has Plastic covering to handrails. Side hand rails with a mid-rail and solid-sheet steel panel, fitted to both sides of the stair-flight. Full solid-sheet steel panels are fitted to the sliding rails at each side of the top platform. Steering is turntable-type through a ball-bearing ring, controlled by the tow-bar. Tow-bar has a 50mm diameter towing-eye and grip-handle to assist coupling.
Four wheels with pneumatic tyres, fitted on stub-axles. Each stub-axle is individually mounted for easy and economical maintenance. Parking-brake – operating on front steering wheels, actuated by raising the tow-bar. 4 stabilising-jacks are fitted to the chassis frame 2 x wind-down type at front end and 2 x wind-down type at rear end.
Passenger Stairs - VO80/20-2045 Datasheet
