FUEL
AIRPLANE
OPERATIONS
MANUAL
2-08-10
Page
2
Code
01
REVISION 38
AOM-145/1114
DEFUELING
Pressurized defueling uses the same adapter as pressure refueling.
Pressurized defueling can be performed using the electric fuel feed
pumps installed in the tanks or by suction (4 psi max.) provided by an
appropriated external source. Selecting the defueling switch to OPEN
will open the defueling shutoff valve allowing defueling operation. To
defuel the left tank, the crossfeed knob on the overhead fuel panel, in
the cockpit, must be positioned to LOW2.
Complete gravity defueling may be achieved by using the drain valve
and opening the associated gravity refueling cap. Partial gravity
defueling can be done through the dump valves located on the wing
under skin near the wing root. Pressurized defueling can only be
performed with the airplane normally energized.
CAUTION:
DO NOT RUN ELECTRIC PUMPS WITH FUEL
QUANTITY IN EACH TANK BELOW 30 LITERS
(8 US GAL) OR 24 KG (54 LB).
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