AIRPLANE
OPERATIONS
MANUAL
FUEL
REVISION 38
2-08-10
Page
5
Code
01
AOM-145/1114
6 - TK SEL/TEST SWITCH (spring loaded to center position)
TEST - Initiates indicator built-in and probes conditions test. All
light segments illuminate and a failure code is presented,
if a failure is detected.
TK SEL - Selects which fuel quantity is going to be displayed in the
upper display. When the indicator is energized, the total
fuel quantity is shown. Sequentially pushing the switch to
TKSEL will select left tank, right tank and total fuel
quantity.
7 - QUANTITY SELECTION SWITCH (SPRING LOADED TO
CENTER POSITION)
− Increment (INCR) or decrement (DECRT) the fuel quantity
selection.
− If moved from the neutral position during refueling, it interrupts
the operation. The refueling operation will be restored 4
seconds after switch return to the neutral position.
8 - FUEL QUANTITY SELECTED INDICATOR
− Displays the fuel quantity in the airplane and the fuel quantity to
be refueled.
− When the FAIL inscription is displayed blinking on the fuel
quantity remaining indicator and the TKSEL/TEST switch is
pushed to TKSEL, the active fail description is momentary
displayed in both indicators.
− The indicator displays zero as the refueling compartment door is
opened.
9 - REFUELING SWITCH (GUARDED)
− When the switch is closed, both wing pilot valves close the
refueling shutoff valves.
NOTE: The defueling and the power selection switch are moved to
close/normal position when the refueling panel door is closed,
besides refueling/defueling procedure requires manual
closure.
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