Page 3-11
P/N 140-590032-0007
Revision A4: Sep, 2010
Section III Sub-section 3
FUEL SYSTEM
Pilot’s Operating Manual
AUXILIARY TANK TRANSFER
The AUX FUEL TRANSFER lever is located on the center control pedestal and mechanically actuates
the ventral tank transfer valve. Moving the lever to the down position opens the transfer valve and the
white AUX FUEL TFR annunciator on the overhead roof panel will illuminate.
With both fuel pumps operating, fuel transfers from the ventral tank to both wing tanks with jet pump
operation in approximately 10 minutes.
When only one fuel pump is operational, the fuel from the ventral tank can only transfer to the wing with
the operational fuel pump running. Under this condition the transfer process time may increase to over
18 minutes.
NOTE: To make sure the fuel in the ventral tank has been completely transferred, the AUX FUEL
TRANSFER lever should be left open for at least 2 minutes after the completion of fuel
transfer and the airplane has reached it’s cruising altitude.
If both fuel pumps are inoperative the fuel in the ventral tank cannot be transferred.
NOTE: Overweight landing procedure and inspection is required for any landing made with fuel in
the ventral tank.
Moving the AUX FUEL TRANSFER lever to the up position closes the ventral tank transfer valve and
the white AUX FUEL TFR annunciator will extinguish. Auxiliary fuel transfer process should begin as
soon as the indicated fuel in each wing reduces to 3300 lbs.
WING TANK CROSSFEED and TRANSFER
The WING FUEL cock is located on the center control pedestal and mechanically actuates the wing
tank crossfeed valve and the transfer valves. The WING FUEL cock has three positions:
• WING FUEL up gate position (all valves closed)
• X-FEED center position (crossfeed valve open)
• TRANSFER bottom position (crossfeed and transfer valves open)
The WING FUEL position closes the crossfeed and transfer valves and allows fuel to feed from the left/
right wing tanks to the left/right engines respectively. The lever should be in this position for all normal
flight conditions.
The X-FEED position opens the crossfeed valve and allows fuel from either wing tank to feed one or
both engines. In the event of a fuel pump failure, the X-FEED position enables the operating fuel pump
to supply both engines.
The TRANSFER position opens the transfer valve and enables wing to wing fuel transfer. With the lever
in the TRANSFER position and a single fuel pump operating, fuel transfers from the opposite wing tank
to the wing tank containing the operating fuel pump.
AUX FUEL
TFR
