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(1) Document the incident and quantity of
JP8+100 received on the aircraft DA Form 2408-13-1.
Register the incident with the USAPC so systemic problems
can be identifed and rectified. Contact USAPC at
DSN: 977-8580.
(2) The aircraft will be allowed to operate with
this additive without restriction and will be considered
“+100” free after (3) refuelings with a full usuable fuel
load of JP8.
(3) If circumstances dictate an aircraft defueling,
transfer the JP8+100 to another aircraft. If this is not
possible, the JP8+100 must be treated as a hazardous
waste material and disposed of accordingly.
(4) For ground equipment, defuel the JP8+100
and treat as hazardous waste. After defueling, consume
one tank full of JP8, then immediately replace filter/coalescer
elements.
c. The use of kerosene fuels (JP-5 or JP-8 type) in
turbine engines dictates a need for special precautions.
Ground starts and air restarts at low temperature maybe
more difficult due to low vapor pressure.
d. When changing from one type of authorized fuel
to another - for example, JP-4 to JP-5 or JP-8 – it is not
necessary to drain the aircraft fuel system before adding
the new fuel.
e. Fuels having the same NATO code number are
interchangeable. Jet fuels conforming to ASTM-3-1655
specification may be used when MIL-T-5624 or
MIL-T-83133 fuels are not available. This usually occurs
during cross-country flights where aircraft using NATO
F-44 (JP-5) are refueled with NATO F-40 (JP-4) or Commercial
ASTM Type B fuels. When this occurs, engine
operating characteristics may change in that lower operating
temperature, slower acceleration, lower engine
speed, easier starting, and shorter range may be experienced.
The reverse is true when changing from F-40
(JP-4) fuel to F-44 (JP-5) or Commercial ASTM Type A-1
fuels.
WARNING
To prevent fuel from spilling from the
tanks, caution should be used when opening
fuel caps after pressure refueling or
when aircraft has been sitting in the sun.
2-15-5. Fuel Tanks Servicing.
The CH-47D helicopter has six fuel tanks, three tanks on
each side. The tanks can be serviced through the single–
point pressure refueling system or through filler ports in
each tank. The single-point method of servicing is preferred.
Using this method, all tanks can be filled, partially
filled, or selectively filled in less than 4 minutes. Refer to
table 2-15-1 for individual tank capacities.
TM 1-1520-240-10
2-15-2
2-15-6. Single-Point Pressure Refueling.
The pressure refueling control panel and nozzle receptacle
are on the right side of the helicopter above the
forward landing gear (fig. 2-4-6). The landing gear access
cover must be opened to expose the panel and
receptacle. A nozzle grounding adapter is located on the
structure adjacent to the receptacle.
a. Be sure the helicopter is at least 50 feet from any
hangar or structure.
b. Be sure the refueling unit is at least 10 feet from
the helicopter.
c. Electrically ground the helicopter and refueling
unit as follows:
(1) Connect one end of ground cable to the aft
landing gear eyebolt or to the jack on the right side of the
fuselage at sta 115. Connect the other end to a grounding
rod or ramp ground point. Be sure the cable has no broken
strands and the clips are securely attached to the
cable and ground points.
(2) Be sure the fueling unit is grounded to the
same ground point as the helicopter.
d. At the cockpit overhead Fuel CONTR panel, set
REFUEL STA switch to ON.
CAUTION
Be sure the fueling station fuel quantity
indicator is operating before pressure fueling.
If the indicator is not operating, the
fuel shutoff valves cannot be checked
properly and fuel cell overpressurization
may result.
e. Open the right forward landing gear access panel
and perform the following check:
(1) Set the PWR switch to ON. Check that both
REFUEL VALVE POSN lights momentarily illuminate,
then extinguish. If either light illuminates and does not
extinguish, the associated refueling valve has failed and
fuel will not flow into that aft auxiliary tank. If the fuel in this
tank is required to complete the mission, notify maintenance.
(2) If required, set the LIGHT switch to ON.
(3) Set the FUEL QUANTITY selector switch to
TOTAL.
(4) Set the ALL TEST switch to PRI OFF.
(5) Connect the grounding wire to the grounding
receptacle and connect the fueling nozzle to the
adapter.
CAUTION
If either the primary or secondary float
switch for any tank is inoperative, do not
　
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