AIRPLANE
OPERATIONS
MANUAL
GROUND SERVICING
REVISION 38
1-12-25
Page
1
Code
04
AOM-145/1114
FUEL SYSTEM SERVICING
PRESSURE REFUELING
Pressure refueling is done by accessing an adapter and a panel
located on the right wing-to-fuselage fairing. The adapter is assembled
with a valve operated by the opening movement of the fueling nozzle
shut-off valve, which is manually controlled. Refer to the FUEL
SYSTEM (Section 2-8) for detailed description of the system.
− Connect the ground cable to the airplane.
− Open refueling panel access door on the right side of the fuselage.
− Energize the airplane or set the Power Selection switch to
BATTERY.
− Make sure that the refueling CLSD (closed) lights associated with
LH and RH tanks are extinguished.
− Make sure that the DEFUELING light is extinguished.
− Make sure that the SELECTED fuel quantity indicator shows zero,
select the desired fuel quantity for the airplane.
− Remove the protection cover from the pressure refueling adapter.
− Connect the refueling nozzle to the pressure refueling adapter.
− Pressurize the system (35 - 50 psig).
− Make sure that the refueling CLSD lights associated with LH and
RH tanks illuminate and the refueling flow stops.
− Set the REFUELING switch to the OPEN position and make sure
that the REFUELING lights associated with the LH and RH tanks
extinguish.
− Make sure that the refueling CLSD lights related to LH and RH
tanks illuminate, when the desired fuel level is reached.
− For airplanes with High Level Exceeding Indication System if the
automatic refueling shutoff fails and the failed tank overfills, the
“STOP RFL” red light will illuminate. Stop immediately the refueling
operation and defuel the extra fuel of the affected tanks.
− Set the REFUELING switch to the CLOSED position.
− Disconnect the refueling nozzle from the pressure refueling
adapter.
− Close the pressure refueling adapter with the protection cover.
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