Suitable for B737 Aircraft Forward and Aft Doors On SERIES 100 THRO’ 900
General specification
The Steps have a fixed lower stairway.The top-platform extends telescopically (see ** below). 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 tubular-steel side / hand rails with a mid-rail and steel-mesh 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.A tubular-steel rail is fitted across the front end of the chassis, providing a conveniently positioned hold for pushing and pulling.Manual wind-down stabiliser jacks are fitted to the front & rear sides of the chassis-frame.
Standard Finish
Chassis-Frame,Steering-Turntable, Tow-Bar and Front-Rail are Galvanised to ISO1461. All other sections and panels are Painted in a single Corporate colour. High-visibility (red ‘day-glo’ painted) Markings, are applied to front/rear chassis Corners and sides of tow-bar. ** The top-platform is mounted on a short telescoping-section, elevated via a hand-operated hydraulic-pump and lift-cylinder.
This feature provides either one, or two, or three, additional full step-rises when required – To cater for the variations in height between front and rear door-sills and of the B737 Aircraft series-variants. Two spring-loaded Pawls, provide mechanical locking of the telescoping-section at each of the additional full step-rise positions.
Options / Extras
- Alternative type Stabiliser Jacks.
- Foam filling of tyres to protect against punctures.
- Special Corporate or Identification markings.
- Additional Visibility markings.
- Plastic covering to handrails.
- Solid-sheet panels on the stair-flight side-rails (instead of mesh-panels).
- Stairway illumination.
- Electro Hydraulic powered elevation
- *Stainless-steel rod in lift-cylinder
* (Recommended if the location is in a heavily
salt-laden environment close to sea coasts)
Weight : 850kgs
Dimensions:
Top Platform Heights:
- Fixed steps only / telescoping-section fully lowered: 2.354m (92.68 inches)
- Fixed steps plus one telescoping-step raised: 2.549m (100.35 inches)
- Fixed steps plus two telescoping-steps raised: 2.744m (108.03 inches)Fixed steps plus telescoping-section fully raised: 2.939m (115.71 inches)
- Top Platform Length: 1.40m (55.00 inches)
- Step-Tread details:Step Rise: 195.2mm (7.685 inches)
- Step Length: 250mm (9.842 inches)
- Step Width: 1020mm (40.157 inches)
- Number of Steps (including top-platform): 12, fully lowered / 15, fully raised
- Width inside handrails (on stair-flight): 1030mm (40.55 inches)
- Width inside handrails (on top-platform): 1340mm (52.755 inches)
Overall dimensions of the fully-assembled unit:
- Width: 1.780m (70.08 inches)
- Length: (Tow-bar up and parking-brake applied): 4.51m (177.5 inches)
- Height: (Ground to top of Top-Platform side-rails, with telescope lowered) 3.34m (131.5 inches)
Minimum Towed Turning-Circle: 22m (11m swept-radius) measured at the outer corner of the lowered top-platform) or 8.74m (4.37m swept-radius) measured at inside of the inner rear wheel.
Alternative Overall Shipping Dimensions: W1.73m x L5.35m x H1.9m are achievable(With stair-flight support-stays, ram top-pivot & handrail bottom-end stanchions un-bolted).
Further reduction in overall shipping-dimensions (W1.73m x L4.4m x H1.1m) can be achieved by further dismantling and ‘flat-packing’.