Figure 5-4.—Gravity fueling.
before it is placed in the filler neck to prevent sparks
caused by static electricity. Static electricity is built up
by the fuel flowing through the hose. The nozzle should
be supported while it is in the filler neck. This will
prevent damage to the filler neck and, in the case of
aircraft that use bladder-type fuel cells (cells made from
a type of rubberized nylon cloth), prevent the possibility
of damaging the cell with the end of the nozzle.
Pressure Fueling
Most naval aircraft are refueled by the pressure
fueling system. This system gives the aircraft a faster
operational turnaround time.
Pressure fueling on an aircraft is usually done from
a single point. Fuel from this point is supplied to the
various wing and fuselage tanks. In some cases, the
drop tanks and flight refueling package may be
refueled from this point.
The pressure-fueling station on the aircraft has a
pressure-fueling and defueling receptacle and an
electrical control panel (fig. 5-5). The pressure-fueling
receptacle is standard on all aircraft that use the
pressure-fueling method. However, the electrical
panel and controls differ from one aircraft to another,
depending upon the complexity of the fuel system. The
general and servicing section of the applicable
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