11. Zero the refueling stations meter or note the
stations totalizer reading (station operator).
12. Upon receiving signals from the nozzle opera-
tor and plane captain that hook-up has been completed
and the fueling operation is ready to begin, the station
operator actuates the remote, hand-held deadman con-
trol. Deadman controls must NOT be blocked or over-
ridden in any way. Such action defeats the purpose of
the device and can lead to a catastrophic accident.
13. Rotate the nozzle flow control handle to the
FULL OPEN position. The handle must rotate 180
degrees to ensure that the poppet valve is fully open and
locked (nozzle operator). The flow-control handle of
the pressure refueling nozzle will be placed in either of
two locked positions: fully open or fully closed. The
handle is NOT to be used as a flag to indicate fuel flow.
Excessive wear on the aircraft adapter and the fuel
nozzle poppet will result if the handle is allowed to
float in the unlocked position.
14. Once fuel flow is established, test the aircrafts
precheck system (plane captain).
The precheck system simulates the com-
pletion of a complete refueling by closing all
the tank inlet shutoff valves within the aircraft.
All fuel flow into the aircraft should stop within
a few seconds to 1 minute of actuating the
precheck system. The refueling station meter is
the primary means of detecting that fuel flow
has stopped and that the precheck was success-
ful. If a meter is not available, successful pre-
check may be confirmed by observing the jerk
and stiffening that occurs in the refueling hose
and/or the pressure spike that occurs at the
refueling station. An aircraft may be cold refu-
eled if it fails precheck but special procedures
are required. See the appropriate aircraft NA-
TOPS manual. Cold refueling after precheck
failure should be done only if it is an opera-
15. Fuel aircraft as directed by the plane captain.
The plane captain monitors the aircraft vents, tank
pressure gage(s), and/or warning lights as necessary.
16. When directed by the plane captain, release the
deadman control (station operator).
17. Rotate the nozzle flow-control handle into the
OFF and fully locked position (nozzle operator, and
verified by the station operator). Failure to lock the
flow-control handle in the OFF position can contribute
to failure of the nozzles safety interlock system and
could result in a fuel spray or spill.
18. Disconnect the nozzle from the aircraft adapter
19. Stow the pantograph or hose (nozzle operator
and station operator).
20. Complete the paperwork (nozzle and station
Overwing (Gravity) Refueling at
Direct Fueling Stations (Pits)
Overwing (gravity) refueling of aircraft at fueling
hydrants, direct refueling stations, skid mounts, and
other fuel service units is done using the procedures
previously mentioned but with the following modifi-
The overwing nozzle must be bonded to the
aircraft via a nozzle bonding cable prior to removing the
Overwing refueling with the aircrafts en-
gines operating (hot refueling) is NOT author-
The overwing nozzle is inserted into the air-
crafts refueling port. Metal-to-metal contact between
the nozzle and the aircraft fueling port must be main-
tained during the entire fueling operation.
TRUCK FILL STANDS
Operating truck fill stands is a one-person opera-
tion for trucks equipped with high-level alarms/shut-
off and deadman control valves at the fill stand. This
is a two-man operation for equipment not having
Top loading must NOT be performed. This
method of filling is extremely dangerous be-
cause of the highly flammable vapors and static
Trucks are filled in the following sequence:
1. Position the truck, turn off lights, place the gear
shift in the neutral or park position, set the parking
brake, stop the engine, and turn off all switches except