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graphically displays total internal fuel, bingo level, and fuel quantities for up to five external fuel tanks.
The shaded regions of each graphic display the ratio of fuel available to fuel capacity. Digital readouts
of total fuel (large numbers), total INT fuel, external fuel tank quantities, and current BINGO setting
are also provided but are truncated to 100 lb increments.
The internal fuel format graphically displays only internal fuel tank quantities. Digital readouts of
feed tank fuel quantities are also provided, truncated to 100 lb increments.
During battery start of the engines, the EFD defaults to display three external fuel tanks (centerline
and inboard pylons) if one or more external fuel tanks are installed. For instance, if a full centerline
tank is installed, the EFD displays a full centerline graphic and 3.2 lb fuel. The inboard tanks appear
empty reading 0.0 lb fuel. When the SMS completes startup BIT and initial inventory, the EFD
displays only the installed tank(s).
The aircraft fuel load can be checked on battery power by placing the ENG CRANK switch to L or
R, by starting the APU, or by resetting the MSP codes in the nose wheelwell. In the F/A-18F, the total
fuel load and the tank one fuel ratio will be in error, since the SDC defaults to F/A-18E settings while
on battery power. The total fuel load will appear 200 to 400 lb high, and the Tank 1 graphic (as
displayed on the internal format) will indicate approximately two-thirds when Tank 1 is, in fact, full.
When the MCs become operative with ac power applied, the total fuel load will be correct, and the EFD
will show the correct Tank 1 fuel ratio.
Bingo level is adjusted in hundred pound increments by rotation of the BINGO knob and thousand
pound increments by pull and rotation (clockwise is increasing). The MODE button toggles the EFD
between the top level and internal fuel formats. Pressing the MODE button for greater than 1.5
seconds selects the MSP format. With the MSP format displayed, the BINGO knob cycles between
MSP code pages if more than one is present. Pressing the MODE button again for greater than 1.5
seconds runs and displays the results of a consumables test. Subsequent actuation for less than 1.5
seconds returns to the last displayed top level or internal fuel format. Clockwise rotation of the BRT
knob increases the display's brightness.
In the F/A-18F, the formats can be displayed on the aft EFD independently from the front EFD.
2.2.7.2 FUEL Display. The FUEL display (figure 2-7) is selected by the FUEL option on the SUPT
MENU. The FUEL display lists TOTAL fuel (internal and external), total INTERNAL fuel, the
available fuel in each tank, and the current BINGO setting. A moving caret is shown on the right side
of each tank, indicating the ratio of fuel available to tank capacity.
The SDC continuously monitors the validity of the fuel probes installed in each tank. If all probes
in a tank (except the feed tanks) are declared invalid, the SDC displays 0 lb fuel and the INV (invalid)
cue next to the tank. If one or more probes in a multi-probe tank are declared invalid, the SDC displays
the total of the valid probes only and the EST (estimated) cue next to the tank. If a feed tank fuel probe
A1-F18EA-NFM-000
I-2-19 ORIGINAL
Figure 2-5. Fuel Quantity
A1-F18EA-NFM-000
I-2-20 CHANGE 1
is invalid, the SDC displays 1,125 lb (0 lb if the FUEL LO caution is set) and the EST cue. The TOTAL
and INTERNAL fuel values indicate the sum of all valid and estimated tank quantities with EST cues
(INV cues if any tank is INV).
The FLBIT option on the FUEL display is used to initiate a BIT of the fuel low level indicating
system. The FLBIT option remains boxed during BIT. A satisfactory test results in a FUEL LO
caution within 10 seconds of BIT initiation. FLBIT cannot be initiated with a FUEL LO caution set
or an SDC failure. An SDC RESET option is provided to command an SDC software reset.
2.2.7.3 F-QTY Advisory. The F-QTY advisory indicates an SDC or fuel quantity indicating system
failure which affects the accurate display of fuel quantity or CG information. The advisory is activated
when:
a. The MC loses communication with the SDC.
b. The SDC reports an internal or gauging system failure.
c. Any tank quantity is INV.
Figure 2-6. Engine Fuel Display (EFD) - Fuel Parameters
A1-F18EA-NFM-000
I-2-21 ORIGINAL
d. The SDC reports its output discretes are not working.
If a F-QTY advisory results from loss of MC communication with the SDC or the SDC reporting an
internal or gauging system failure, the MC is unable to report actual fuel quantities and the following
are displayed on the FUEL display (GLIM 7.5G caution):
a. All fuel quantities (except TOTAL) are held at their last displayed value.
　
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本文鏈接地址：NATOPS Flight Manual 飛行手冊(cè) 1(40)