Data Page |
Tail Support Stanchion dampens
aircraft movement during ground operations.
Models 705C and 745B are for use on the Boeing 747
Freighter and Combi during cargo operations to dampen
aircraft movement caused by changes in center of gravity
and weight. Nose door sill movement is reduced 50-80%.
Model 705C is designed for Fixed location operations while
the 745B is a Flyaway unit for ULD air transport on a 125 in.
x 88 in. pallet.
Model 705C & 745B are “Unipod” type units with a
tripod
support structure. The stanchions are rated at 15 tons and
may be pre-loaded with the integral hand pump to any load
up to 25,000 pounds. The stanchion load ram is then a solid
column at loads up to 25,000 pounds. When the load
exceeds the limit, a pressure relief valve opens to a gradual
retracting of the load ram. The ram will return to a solid
column when the load reduces to approx. 22,500 pounds.
This hydraulic dampening effect occurs slowly to restrain
aircraft vertical movement.
As aircraft center of gravity shifts forward, or weight
decreases, the stanchion ram extends with the aircraft until a
compressive load is reapplied; thus acting to restrain the
aircraft against tipping.
Model 705C & 745B include a head stock
that clamps to the 747 freighter/combi tail ball fitting. The
head stock jaws are operated by an integral hydraulic
cylinder for opening and closing the jaws around the ball
fitting. The head stock jaws travel over center to the closed
and lock position to ensure a positive connection even in the
event of a loss of hydraulic pressure in the jaw cylinder.
The stanchion cylinder assembly is supported by the tripod
leg structure for towing and positioning. Once in operation,
with the head stock engaged around the ball fitting, the
stanchion footpad is lowered to the ground and aircraft load
is transmitted through the stanchion to the single footpad.
Both Malabar models meet or exceed Boeing
recommendations. Specify either model for applications
requiring Boeing Tool #ME65B16362.
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Model 745B Tail Support Stanchion
Flyaway, ULD Type Unit
Model
705C Tail Support Stanchion
Fixed Base Type Unit |
Owner's