Warning/Caution/Advisory Lights Flashcards
(56 cards)
“CABIN ALT” warning
Cabin pressurization failure or air conditioning malfunction. May be due to high AOA or low airspeed.
- Air Conditioning sys failure caused by overpressure to the CAU compressor
- CAU compressor outlet temperature above 500 F
- CAU turbine inlet temp above 250 F
- Cockpit press failure, only when the CABIN press alt ind exceeds 24,500’
“FIRE” warning
Engine bay fire detected
“GENERATOR” warning
Generator Failure
- Under-voltage (25 Vdc or less)
- Overvoltage (30.2 V),
- Generator taken off line
(2 minute timer provides battery power to the DEU, both left MFDs, SADS, CEU when generator is taken off line by under-voltage or overvoltage condition. Removes power after 2 minutes)
“GTS FIRE” warning
GTS bay fire detected
“HOOK” warning
Hook position does not agree with handle position.
(At airspeeds above 300 kts with the hook extended, air loads may raise the hook slightly, causing the “HOOK” light to illuminate)
“HYD FAIL” warning
Total hydraulic pressure loss
Illuminates when HYD 1, HYD 2, and the emergency system loses pressure. Below 1600 psi on HYD 1 and HYD 2, and below 600 psi on the emergency system.
“L BAR” warning
In-flight Launch bar not locked up
Launch bar not retracted, all landing gear down and locked, and weight off wheels for 10 seconds
“LAW” warning (T-45C - MFD display)
Altitude is below LAW setting
Initiates when the aircraft descends to or below the LAW setting and continues until the aircraft ascends above the law setting. With gear extended LAW advisory will be displayed for 3 seconds.
LDG GEAR handle warning light
Any landing gear position disagrees with the handle.
All gear doors are not up and locked with the handle up.
- One landing gear differs from the handle position
- When one landing gear is not down and locked with the LDG Gear handle set to DN
- When the gear doors are not up and locked with the gear handle up
“OIL PRESS” warning
Oil pressure low
Oil pressure differential is low for more than 10 seconds. Momentary illumination is ok under positive G following a period of zero or negative G.
“OXYGEN” warning
OBOGS failure detected
Oxygen concentration below acceptable limits, bleed air supply temperature is above 250 °F, or OBOGS BIT failure
“WHEELS” warning
Indicates LDG GEAR handle is not set to DN,
throttle below 95% N2 rpm position, and
either:
Altitude below 7,200 feet MSL (less than 9,500
±300 feet MSL when climbing or
7,700 ±500 feet MSL when descending), and airspeed below 170 KIAS.
“AC INV” caution
Either or both inverters have failed.
“ACCEL” caution
Shot of fuel solenoid or steam ingestion bleed
valve is not in the proper position.
The two-position shot of fuel solenoid should be open on the ground and whenever the aircraft is below 7,200’ MSL.
The steam ingestion bleed valve should be open when the launch bar is not retracted, weight on wheels, and N2 rpm above 70 percent.
“AV HOT” caution
Avionics cooling air hot/ground indication only
Air temperature in the auxiliary equipment bay exceeds 67C
“BRK PRESS” caution
Brake pressure release system has failed.
In the catapult- brake pressure release system has failed, brake pressure is available. At other times, most likely an indication problem
“CANOPY” caution
Canopy unlocked
Master alert activated if throttle is advanced above 95% N2
“C AUG” caution
Control augmentation off, degraded, or in IBIT
Control augmentation provides yaw damping, turn coordination, speed brake-to-stabilator interconnect, and rudder trim.
“DOOR” caution
A landing gear door is open (not up and locked)
“ECA 2” caution
ECA dual channel failure
The Engine Control Amplifier (ECA) automatically prevents overspeed and overtemp conditions.
“FUEL” caution
Collector tank fuel is below 350 pounds
“F PRES” caution
Fuel tank pressurization failure, fuel boost pump failure, or one or both ENGINE switches set to OFF.
If fuel tank pressurization is lost, two inward relief valves allow ram air to enter the tanks.
If both boost pumps fail, a bypass valve will allow the engine driven pump to draw fuel directly from the bottom of the negative G compartment.
“HYD” caution
HYD system pressure low.
Illuminates when either HYD 1 or HYD 2 pressure drops below 1600 psi. Extinguishes when both HYD 1 and HYD 2 pressure is at least 2000 psi
“LP PUMP” caution
Engine driven low pressure fuel pump failure/outlet pressure low or low pressure fuel filter is clogged.
Illumintates when pressure drops below 35 psi
