Pressure and differential pressure gages.
Meter (temperature-compensating meters are de-
Approved aircraft-refueling hoses.
Dry-break quick-disconnect coupling.
Hose-end pressure regulator.
Approved aircraft-refueling nozzles.
Refueler/defuelers have two sepa-
rate hose/pressure nozzle assemblies:
one includes a hose end pressure regu-
lator (for refueling service) and the
other doesnt (for defueling opera-
Aircraft fuel servicing vehicles must have at least
two fire extinguishers installed: One must be on the
left front (drivers) side, readily accessible from the
operator (refueler control panel) position. The other
extinguisher must be on the right rear portion of the
Remote, hand-held deadman control.
Tires are of a non-FOD type, with slick tread or
wide-lug, wide-groove tread. The tread must NOT
have a narrow groove design, in which small stones
and foreign matter could become imbedded and
deposited on airfield surfaces. Recaps and slicks are
not authorized for use on the steering wheels when
the vehicle is operated off base.
The exhaust of all engines, including auxiliary en-
gines, must have a suitable spark arrestor.
The most ideal and cost-effective method of han-
dling non-suspect defueled aviation turbine fuel is to
reissue it to an aircraft. Most facilities that handle
size able quantities of such fuel have designated one or
more aircraft refueling trucks as refueler/defuelers.
In addition to the requirements for refuelers, refu-
eler/defuelers must also meet the following minimum
Refuel/defuel trucks carry the marking JET
FUEL/JP in place of the normal markings (for exam-
ple, JP-5 JET FUEL F-44 or JP-4 JET FUEL F-40).
A dedicated defuel connection to piping system
that passes the fuel through the pump, falter/separator,
monitor, and relaxation chamber before it enters the
Separate hose and nozzle assemblies provided
on refuel/defuelers for each of the two different opera-
tions, refueling and defueling.
Maximum defuel is 100 gpm.
High-level alarm. A high-level cutoff system is
also highly recommended.
Defuelers are used for defueling only. Fuel placed
in a defueler is not to be directly reissued into an
aircraft; since the defueler is generally configured
without filtration equipment, the fuel placed in a de-
fueler unit is often suspect. Fuel in a defueler must be
sampled and tested to determine disposition.
Hose evacuation systems must NOT be
used for defueling.
Defuelers must have the following minimum re-
A centrifugal pump with the maximum defuel
rate of 100 gpm
A cutoff or alarm system for overfill protection
A defuel hose and nozzle
Proper maintenance is critical to the delivery of
clean, dry, uncontaminated fuel to aircraft. A well-
executed and documented PM program will help
achieve this goal, but a formal inspection program is
also necessary. The implementation of an inspection
program is the responsibility of the Fuel Management