the A/B (afterburner) tie-down. It consists of a deck
attachment fitting, a safety lock retainer, a chain, and a
coupler that fits the aircraft holdback fitting.
This assembly has a working load of 30,000
pounds. It weighs about 102 pounds and has no
adjustments to lengthen or shorten it. It can be modified
by joining two tie-downs together with a dummy link
for aircraft requiring it.
A newer version of the A/B tie-down, called the
MXU-657/W aircraft restraint, has a different deck
attachment fitting, and is shown in figure 10-12.
Otherwise, it is identical.
Special high-strength deck fittings are installed
aboard ships and at shore stations in designated engine
run-up areas. Specific A/B tie-down instructions for
each type of aircraft are contained in the specific
maintenance instruction manual (MIM).
Aircraft Tow Bars
Two general classes of tow bars are used in naval
aviationthose adaptable to only one type of aircraft
and those adaptable to more than one type.
The universal aircraft tow bar, Model ALBAR
(Adjustable Length Towbar) (fig. 10-13) is the type of
tow bar most commonly used by the Navy today. It is
available in four different models and lengths. It is used
to tow and position aircraft weighing up to 90,000
pounds. The ALBAR is designed for towing aircraft
that have nose or tailwheel axle holes, or fuselage or
4 BAR DOG
5 BAR DOG
Figure 10-11.Aero full power tie-down assembly.
Figure 10-12.MXU-657/W aircraft restraint.
Figure 10-13.ALBAR universal aircraft tow bar.