A-A-58036
2.4 Mobility: The staircase shall have a high degree of mobility over rough concrete and smooth
sod with emphasis on ease of manual positioning about the aircraft The staircase shall be
capable of being towed at a maximum of 15 MPH.
2.5 Running Gear Design: The staircase shall have four pnuematic-tired casters conforming to
MIL-C-4751. Two MS24373-8WSC swivel casters shall be provided at the aircraft end of the
staircase. Two rigid casters shall be provided at the front of the staircase. Swivel locks shall be
provided.
2.6 Towbar A towbar shall be provided. It shall be designed to permit rapid attachment and
detachment and shall swivel in the vertical plane. Towbar attachment fittings shaIl be located at
the rear, or aircraft end , of the staircase. Adequate means shall be provided for stowing the
towbar in a suitable location on the staircase framd
2.7 Performance THe staircase shall be capable of withstanding a temperature range from -65
degrees to +160 degrees F. Withstand wind velocities up to 60 MPH from any direction.
2.8 LL" ft The staircase shall be provided with a lift mechanism that shall be operated
i
manually through mechanical or hydraulic means from ground level BY means of a hand-operated
crank or lever. A device shall be provided to automatically lock the staircase in any ascent of
descent position attained by the lift mechanism.
2.9 Electrical System The staircase shall feature a 24-volt power system provided by batteries
connected in series. The batteries shall be housed in an enclosed box in a convenient and
protected location and fitted with a quick-release cover to facilitate ease of inspection and
servicing.
2.10 Lighting System: The staircase shall be equipped with amber-colored clearance lights
located at the upper platform and ground end. The slearance lights shall permit visibility from
any position around the staircase. The steps shall be illuminated to a sufficient degree that every
step and the platform will be clearly visible at night to personnel ascending and descending the
staricase. The step lights shall be recessed flush with the side of the staircase and shall illuminate
the entire step and platform areas,
2.11 Steps and Top platform:Each step shall be 36 inches wide with a 12 inch tread and an 8
inch rise. The step treads shall not deviate more than 1-1 /2 degrees from the horizontal plane in
any position. The step treads shall be coated with nonslip material equivalent to standard
commercial offering. The top step shall be made in the form of a platform and a suitable bumper
included to prevent damage to the aircraft. The width of the platform shall conform to the width
of the steps and shall be 60 inches in length.
2.12 Finish All exterior surfaces shall be painted using offeror's standard commercial paint
system. Finish color shall be 24052 as per FED-STD-595.
For Parts Inquires submit RFQ to Parts Hangar, Inc.
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business