accommodate the fueling of a number of aircraft within a given
time span without moving them, more fueling stations are
normally required than would actually be used at one time.
b) Provide a flow rate criteria for each fueling
station of 600 gpm (38 L/s) or 1,200 gpm (76 L/s) at 45 psig
(310 kPa) nozzle pressure. The selection of 600 gpm (38 L/s)
or 1,200 gpm (76 L/s) is based on aircraft. Call MAJCOM for
guidance. Size combined system requirements in multiples of
600 gpm (38 L/s), starting at a minimum flow rate of 1,200 gpm
(76 L/s) up to a maximum flow rate of 2,400 gpm (152 L/s).
pumps in accordance with other paragraphs in this section.
d) Large aircraft such as transports and cargo
planes can be fueled from flush-mounted hydrant pits
(preferred method for Air Force projects). Flush-mounted
hydrant pits are required to conform to Standard Design AW
78-24-28 for Type III hydrant systems. Pantographs can be
used where normal aircraft parking positions can be located
adjacent to edge of the ramp (fixed long-reach pantographs
have a maximum reach of 135 feet (41 m)).
e) Use self-propelled hydrant hose trucks, Type III
hydrant hose carts, or detachable pantograph assemblies to
provide the connection from the flush-mounted hydrant pits to
the aircraft and the necessary controls. Provide a hydrant
control valve that is hydraulically actuated and operated.
f) Equip pantographs in accordance with Navy
definitive drawings or Air Force standard designs. When
incorporating the detachable pantograph into the design,
follow USAFE/NATO specifications in which the swivels contain
in-line repairable roller bearings. In addition, include the
pantograph(s) as part of the construction project. Normally,
the number of pantographs required equals the number of
simultaneous refuelings to be performed.
g) The Air Force large-frame aircraft direct fueling
system is referred to as a Type III pressurized fueling
system. The Type III fueling system, or the constant pressure
system, is the standard hydrant fueling system for large-frame
aircraft. It is comprised of two operating storage tanks, a
pumphouse, a hydrant loop, and hydrants at each parking