TM 55-1510-215-10
Section XII. SERVICING, PARKING, AND MOORING
2-85. General.
WARNING
The following paragraphs include the procedures
necessary to service the aircraft, except lubrication
When aviation gasoline is used in a
covered in TM 55-1510-209-23. Refer to tables 2-3, 2-4,
turbine engine, extreme caution
should be used when around the
service the aircraft. The servicing instructions provide
combustion chamber and exhaust
procedures and precautions necessary to service the
area to avoid cuts or abrasions. The
aircraft.
exhaust deposits contain lead oxide
which will cause lead poisoning.
2-86. Servicing Fuel System.
CAUTION
The fuel system is made up of a 57 gallon
(370.5 pounds) nacelle tank and wing tank fuel cells of
128 gallons (832 pounds) capacity, making a total fuel
Proper procedures for handling JP-4
capacity of 370 gallons (2,405 pounds).
and JP-5 fuel cannot be over
stressed. Clean, fresh fuel must be
NOTE
used and the entrance of water into
the fuel storage or aircraft fuel
Service the fuel tanks after each
system must be kept to a minimum.
flight to keep the bladder type cells
from drying out.
CAUTION
NOTE
When conditions permit, the aircraft
At least thirty minutes after servicing
should be positioned so that the wind
the tanks, open the sump drains and
will carry the fuel vapors away from all
fuel strainer drains and allow a small
possible sources of ignition. The fuel
amount of fuel to drain from each of
vehicle shall be positioned to maintain
these points.
a minimum distance of 10 feet from
any part of the aircraft, while
NOTE
maintaining a minimum distance of 20
feet between the fueling vehicle and
Settling time for AVGAS is 15
the fuel filler point.
minutes per foot of tank depth and
one hour per foot depth for jet (JP)
NOTE
fuels. Allow the fuel to settle for the
prescribed period before any fuel
The use of aviation gasoline as an
samples are taken.
emergency fuel is permitted for a
period of not more than 150 hours
a. Fuel Handling Precautions. While handling fuel
during time between engine overhauls
it is well to remember that even though the aircraft uses
(TBO). A mixture of more than 10%
JP-4 (primary) and JP-5 (alternate) as its principal fuel, it
aviation gasoline shall be entered on
may be operated on aviation gasoline as an emergency
DA Form 2408-13. The lowest octane
fuel.
aviation
gasoline
available
is
recommended to avoid build up of
deposits on turbine blades.
1. Shut off all electrical equipment on the
aircraft, including radar and radar equipment.
The
master switch may be left on, but it must not be moved
during the fueling operation. Do not allow operation of
any electrical tools, such as drills or buffers, in or near
the aircraft during fueling.
2-71
