Table 2-6. Standard, Alternate, and Emergency Fuels
Any AV Gas
*Maximum operating hours with indicated fuel between engine overhauls (TBO).
5. When disconnecting, reverse the order of
d. Filling Fu el Tanks. Fill tanks as follows:
steps 1 through 4.
1. Attach bonding cables to aircraft.
c. Blending Anti-icing Additives to Fuel.
2. Attach bonding cable from hose nozzle to
ground socket adjacent to fuel tank being filled.
3. Always fill nacelle tank before wing tank.
4. Open applicable fuel tank filler cap.
Insure that the additive is directed
into the flowing fuel stream; start
5. Fill fuel tank with fuel.
additive flow after fuel flow starts,
and stop before fuel flow stops. Do
6. Secure applicable fuel tank filler cap.
not allow concentrated additive to
contact coated interior of fuel cells or
aircraft painted surfaces. Use not
less than 20 fl oz of additive per 260
gallons of fuel or more than 20 fl oz
of additive per 104 gallons of fuel.
Make sure fuel filler cap latch tab is
The following procedure is to be used when blending
anti-icing additive (which must conform to specification
MIL-I-27686) with the fuel as the aircraft is being refueled:
7. Disconnect bonding cables from aircraft.
1. Using "HI-FLO PRIST" blender (Model PHF-
e. Filling Ferry Fuel System Tanks.
204), remove cap containing the tube and clip assembly.
system tanks in accordance with procedures and safety
precautions which are used in filling the aircraft's regular
2. Attach pistol grip on collar.
fuel tanks. Observe placard on ferry system tanks which
reads FERRY TANK CAPACITY 120 U.S. GALLONS.
3. Press tube into button.
FILL TO BOTTOM OF TAB ON FILLER NECK. USE
AVIATION KEROSENE OR SEE PILOT'S OPERATING
4. Clip tube end to fuel nozzle.
MANUAL FOR ALTERNATES.
5. Pull trigger fi rmly to ensure full flow, then
f. Draining Moisture From Fuel System.
lock in place.
remove moisture and sediment from the fuel system, 10
fuel drains are installed. The locations are as follows:
flow of additive when refueling
one outboard of nacelle, one in the main gear wheel well
should be at a rate of 30 to 60
(low point of fuel system), one just ahead of wheel well
gallons per minute.
A rate of less than 30 gallons per
(to drain boost pumps), one inboard of nacelle (to drain
minute may be used
when topping off tanks.)