SECTION XV. SERVICING, PARKING, AND MOORING
This section contains instructions on servicing, parking,
and mooring the helicopter. These instructions include
only those tasks which a flight crew may be expected to
perform when away from a military maintenance support
activity. Diagrams and tables are provided depicting ser-
vicing points, materials and walkways.
Safe walkway areas, no step areas, and no hand holds
are depicted in Figure 2-15-1. Servicing points are de-
picted in Figure 2-15-2. Table 2-15-1 lists the approved
materials, specifications and capabilities. Table 2-15-2
lists commercial equivalents for oils.
2-15-3. Fuel Types.
The following describe the various types of fuel.
Army Standard Fuels. JP-8 is the Army-desig-
nated primary fuels adopted for worldwide use.
Alternate Fuels. These are JP-4 and equivalent
commercial fuels which can be used continuously with-
out power reduction when Army standard fuel is not avai-
lable. Power setting adjustments and increased mainte-
nance may be required when an alternate fuel is used.
Emergency Fuels. 100LL (Low Lead) AVGAS
(aviation gasoline) is authorized for use as an emergency
fuel with operation not to exceed 6 hours cumulative
2-15-4. Use of Fuel.
Consult TB 55-9150-200-24 for use of fuel and substitute
data as applicable for turbine engine aircraft (Refer to
tables 2-15-2, 2-15-3 and 2-15-4.)
There is no special limitation on the use of Army
standard or alternate fuel. Certain limitations are im-
posed when emergency fuels are used. For record pur-
poses, fuel mixtures shall be identified as to the major
component of the mixture.
The use of JP8+100 additive is not authorized for
use. However in the event of an inadvertent JP8+100
refueling (ground or aviation), the following procedures
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 prob-
lems can be identifed and rectified. Contact USAPC at
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.
If circumstances dictate an aircraft defuel-
ing, 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.
For ground equipment, defuel the JP8+100
and treat as hazardous waste. After defueling, consume
one tank full of JP8, then immediately replace filter/coa-
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.
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.
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 Com-
mercial ASTM Type B fuels. When this occurs, engine
operating characteristics may change in that lower oper-
ating temperature, slower acceleration, lower engine
speed, easier starting, and shorter range may be exper-
ienced. The reverse is true when changing from F-40
(JP-4) fuel to F-44 (JP-5) or Commercial ASTM Type A-1
To prevent fuel from spilling from the
tanks, caution should be used when open-
ing 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 prefer-
red. 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.