Table 2-18. Recommended Fluid Dilution Chart
FLUID BY VOLUME
PERCENT WATER BY
FREEZING POINT OF
MIXTURE (° F)
30º and above
1. Use anti-icing and deicing fluid (MIL-A-8243 or commercial fluids).
2. Heat Mixture to a temperature of 82º to 93 ºC (180º to 200 ºF).
2-87. FILLING FUEL TANKS.
Prior to removing the fuel tank filler cap,
attach the hose nozzle static ground wire
to the grounding sockets located adjacent
to the filler opening.
Do not fill the auxiliary fuel tanks unless
outboard main tanks are full.
Only fill ferry fuel tanks after the aircraft
main and auxiliary tanks are full.
Fill tanks as follows:
1. Attach bonding cables to aircraft.
2. Attach bonding cable from hose nozzle to
ground socket adjacent to fuel tank being
Do not insert fuel nozzle completely into
fuel cell due to possible damage to bottom
of fuel cell. Nozzle should be supported
and inserted straight down to prevent
damage to the anti-siphon valve.
3. Remove fuel tank filler cap and fill main
tank before filling corresponding auxiliary
4. Secure applicable fuel tank filler cap.
Make sure latch tab on cap is pointed aft.
5. Disconnect bonding cables from aircraft.
2-88. DRAINING MOISTURE FROM FUEL SYSTEM.
Twelve fuel drains are installed (plus one drain
for the ferry fuel system, when installed) to remove
sediment from the fuel system. Two drain lines are
included with the ferry fuel tanks to drain off moisture
from the tanks.
2-89. FUEL TYPES.
a. Approved Fuel Types. Approved fuel types
are as follows:
1. Army Standard Fuels. Army standard fuel
2. Alternate Fuels. Army alternate fuels are
JP-4 and JP-5.
3. Commercial Standard and Alternate Fuels.
Refer to Table 2-16.
emergency fuel and subject to a 150-hour
2-90. USE OF FUELS.
a. Fuel Usage. Fuel is used as follows:
(1) Fuel limitations. Fuel limitations are
outlined in Chapter 5. For the purpose of recording,
fuel mixtures shall be identified as to the major
component of the mixture, except when the mixture
contains leaded gasoline. The use of any fuels other
than standard will be entered in the FAULTS/
REMARKS column of DA Form 2408-13-1, Aircraft
Maintenance and Inspection Record, noting the type of
fuel, additives, and duration of operation.