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BIT segment remains illuminated, EIG has failed self.
test and BIT remains illuminated until self-test is reinitiated.
Total self-test time is 15 seconds. If master test
is deactivated prior to this, EIG returns to normal mode
after the 15-second test. If the MASTER TEST switch
rernainsinINSTformorethanl5seconds,theEIGretains
equalh eight readingsu ntil mastert esti s deselected.
2.11.6 Engine Oil Pressure indicator. The engine
oil pressurein dicatorsd isplay oil pressuref rom 0 to 100
psi. Normal oil pressure is 25 to 6.5 psi and increases in
proportiont o enginer pm within the pressureli mit range.
Stabilizedi dle oil pressurem ay be a minimum of 15p si.
The OIL PRESS caution light illuminates at 11 psi with
decreasing oil pressure and extinguishes at 14 psi with
increasing oil pressure. Maximum allowable oil pressure
fluctuation is *5 psi.
NAVAIR 01.Fl4AAD-1
2.11.7 Exhaust Nozzle Position indicator. The
nozzle position indicators (Figure 2-25) have a range of
0- to loo-percent open. Normal indications (Figure 2-
13) are 100 percent at idle with WOW andvary in flight:
3 to 10 percent at MIL thrust, 5 to 12 percent at MM
AB, and 60 to 90 percent at MAX AB.
Note
When operating engine in SEC mode, the
nozzle position indicator is inoperative and
indicates below zero. No nozzle position indication
is available in SEC mode.
2.11.6 Engine Monitor Display Format A display
of engine parameters (Figure 2-26) can be selected on
the MFD by pressing the pushbutton adjacent to the
ENG legend on the own-aircraft menu. The display
presents Nl (fan speed), TBT (turbine blade temperature),
FF/M (fuel flow main engine) or FFfC (fuel flow
total, main engine and AB), and NP (exhaust nozzle
position). FF/h4 scale indicates main engine fuel flow
and is similar to the fuel flow displayed on the EIG. NP
is the same as the nozzle position indicators. Numerical
readoutsb elow theNI and TBT vertical scalesd igitize
the indicated value. The TIME readout below the FF/M
vertical scale indicates time in hours and minutes that
fuel will last based on current consumption rates. Directly
below the TIME readout, engine faults are displayed
based on current engine operating conditions of
both engines processed by FEMS. If more than three
faults exist at the same time, the acronyms will continuously
scroll upward. The ten possible acronyms and
their definitions are:
1. L MACH # or R MACH # - Mach number
signal to designated engine has failed.
2. L LO THR or R LO THR - Designated engine
may be producing less than expected thrust.
3. L A/ICE or R A/ICE - Designated engine
anti-ice is on or anti-ice valve has failed opposite
commanded position.
4. L OIL LO or R OIL LO - Designated engine oil
level is approximately two quarts low. Postflight,
engine at idle.
5. L AUG or R AUG - Designated AB control
system has failed. AB is not available.
Refer to Chapter 12, WARNING/CAUTION/
ADVISORY LIGHTS/DISPLAY LEGENDS for the
appropriate pilot/RIO response.
2-37 ORIGINAL
NAVAIR gl-Fl4AAD-1
Figure 2-26. MFD Engine Monitor Display
2.11.9 MFD Engine Caution Legends. In addition
to the engine caution lights on the pilot CAUTION/
ADVISORY panel, illumination of the READ MFD
caution light indicates that one or more of the following
caution legends on the upper left quadrant of the MFD
is activated:
1. L N2 OSP or R N2 OSP - Designated engine
N2 overspeed condition.
2. L Nl OSP or R NI OSP - Designated engine
NI overspeed condition.
3. L TBT OT or R TBT OT - Designated engine
turbine blade overtemperature.
4. L FLMOUT or R FLMOUT - Designated
engine flameout.
5. L IGV SD or R IGV SD - Designated engine
inlet guide vane off schedule.
6. L STALL or R STALL - Designated engine
stall detected (also on HUD).
7. L FIRE or R FIRE - Designated engine fire/
overheat condition in engine nacelle (also on
HW.
Refer to Chapter 12, WARNING/CAUTION/
ADVISORY LIGHTS/DISPLAY LEGENDS for the
appropriate pilot/RIO response.
2.11.10 Engine StalllOvertemperature Waming.
An engine stall detection circuit in FEMS monitors
each engine. When a stall condition is detected, a L or
R STALL warning legend is displayed on the HUD and
MFD until the condition is cleared. In addition, an aural
warning tone is activated through the pilot ICS for up to
10 seconds.T here is no pilot check ofthe FEMS engine
stall detection system.
Note
In SEC mode, FEMS and, therefore, the engine
stall detection circuit, is inoperative.
However, overtemperature warning is still
　
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