Boeing 737 - INADVERTENT TRANSFER OF FUEL INTO CENTER TANK; MINIMUM FUEL OPERATION

737 Operations Manual
Non-Normal Checklists -
Fuel
Copyright © The Boeing Company. See title page for details.
NNC.12.6 D6-27370-400E-TBCE
INADVERTENT TRANSFER OF FUEL
INTO CENTER TANK
Condition: An inadvertent increase in quantity in the center tank
and a decrease in quantity in either main tank can
result in excessive main tank imbalance.
FUEL PUMP SWITCHES
(decreasing main tank) . . . . . . . . . . . . . . . . . . . . . . . . . . . . OFF
Note: At high altitude, thrust deterioration or engine
flameout may occur.
CENTER TANK FUEL PUMP
SWITCH (affected side) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ON
MAIN TANK FUEL PUMP SWITCHES . . . . . . . . . . . . . . . . . .ON
When the center tank fuel pump LOW PRESSURE light
illuminates:
CENTER TANK FUEL PUMP SWITCH
(affected side) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . OFF
Repeat the above steps as necessary.
MINIMUM FUEL OPERATION
Condition: A minimum fuel condition exists when the quantity in
any main tank is 1000 pounds (453 kilograms) or less.
MAIN TANK FUEL PUMP SWITCHES . . . . . . . . . . . . . .ALL ON
CROSSFEED SELECTOR . . . . . . . . . . . . . . . . . . . . . . . . OPEN
[Ensures remaining fuel available to both engines.]
Apply thrust changes slowly and smoothly. If a climb is
required, maintain the minimum pitch attitude required for
safe flight.
[Minimizes the possibility of uncovering the fuel pumps.]
June 07, 2002