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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.
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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)
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: 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)
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’.
