Annunciator Lights Flashcards
APU GEN OFF
Indicates APU is operating but APU generator is not in use
L, R) AC BUS OFF
Indicates generator bus is not powered
(L, R) GEN OFF
Indicates generator relay is open disconnecting generator from its bus.*
(L, R) CSD OIL PRESS LOW
Indicates oil pressure in CSD is below operating limits
EMER LIGHT NOT ARMED
Indicates EMER LTS Switch is in the OFF position
AC CROSSTIE LOCKOUT
Indicates AC crosstie relay is locked open and automatic AC crosstie is inoperative.
BATTERY OFF
Indicates BATT Switch is in the OFF position.
DC TRANSFER BUS OFF
Indicates DC Transfer Bus is not powered. Bus is normally powered from Left or Right DC Bus, or battery, in that order.
DC BUS OFF
Indicates either Left or Right DC Bus is not powered.*
(L, R) ENG ANTI-ICE ON
Indicates engine anti-ice system is on. NOTE When any engine anti-ice valve is open, ENG ANTI-ICE ON Light will illuminate regardless of ENG Anti-ice Switch position.
WING ANTI-ICE ON
Indicates anti-ice heat has been selected for wing leading edge and forward strakes.
BATTERY CHARGER
Indicates battery charger has failed.
(L, R) ICE PROTECT TEMP HIGH
Indicates air delivered to pneumatic crossfeed duct is above normal operating temperature, indicating malfunction of temperature control system.*
AIRFOIL ICE PROT PRESS ABNORMAL
Indicates low or unbalanced pressure in wing and strakes or low pressure in duct to horizontal stabilizer. With Air Foil Anti-Ice Switch in the OFF position, indicates malfunction of ice protection pressure regulator
(L, R) ICE PROTECT TEMP LOW
Indicates air delivered to pneumatic crossfeed duct is below normal operating temperature due to low engine thrust or a malfunction in temperature control system
(L, R) ENG VALVE
Indicates disagreement between engine anti-ice valves and switch position.
TAIL DE-ICE ON
Indicates de-icing that has been selected for the leading edge of horizontal stabilizer.
PITOT / STALL HEATER OFF
Indicates Meter Sel & Heater Selector is in the OFF position. With selector in any other position, indicates loss of electrical power to one or more pitot tube or stall angle of attack vane heaters.*
ICE PROTECT SUPPLY PRESS HI
Indicates excessive duct pressure (above 22 psi) from malfunction of ice protection pressure regulating valve.*
(L, R) FUEL HEAT ON
Indicates shutoff valve in engine bleed air supply line to air / fuel heat exchanger is open.
ENG SYNC ON
Indicates ENG SYNC Selector is in N1 or N2 position when Gear Handle is in DOWN position.
(L, R) OIL STRAINER CLOGGING
Indicates an excessive differential pressure across main engine oil system filter.*
(L, R) OIL PRESS LOW
Indicates low engine oil pressure.*
(L, R) INLET FUEL PRESS LOW
Indicates low fuel supply pressure at engine.*
(L, R) FUEL FILTER PRESS DROP
Indicates a differential pressure at main engine fuel system filter.*
ART INOP
Indicates a failure in system that causes automatic reserve thrust to be unavailable, or ART Switch is in the OFF position.*
YAW DAMP OFF
Indicates Yaw Damper is not operating.
AFT AUX FUEL PUMP PRESS LOW
Indicates respective fuel transfer pump or pumps are on but not transferring fuel.**
CABIN ALT
Indicates cabin altitude has reached 9500 feet (+500, -0). When light illuminates, a modulating horn will sound for one second followed by aural warning “CABIN ALTITUDE” for one second, followed by modulating horn for one second. This cycle continues until condition is corrected or for five seconds then warning is automatically reset. Light remains illuminated until cabin altitude is below 10,000 feet. The No Smoking and Fasten Seat Belts signs in cabin illuminate. MASTER WARNING Lights also illuminate.
AC EMERG BUS OFF
Indicates Emergency AC Bus is not powered. MASTER WARNING Lights also illuminate.
CAWS FAIL
Indicates any detected central aural warning system failure.
AUTO BRAKE FAIL
Indicates ABS malfunction. System will automatically disarm and AUTO BRAKE Switch will drop to the DISARM position
AUTO SLAT FAIL
Indicates failure of one or both stall warning computers.*
SPOILER DEPLOYED
Indicates either ground spoiler extended in flight or any spoiler is deployed on the ground with SPD BRK / Spoiler Lever stowed. Light does not monitor position of flight spoilers after takeoff thrust is set. This prevents the SPOILER DEPLOYED Light from illuminating during crosswind takeoffs
TAIL COMPT TEMP HIGH
Indicates tail compartment temperature is exceeding normal temperature. MASTER WARNING Lights also illuminate
APU FIRE
Indicates APU fire detection system is activated. MASTER WARNING Lights also illuminate
DC EMERG BUS OFF
Indicates Emergency DC Bus is not powered. MASTER WARNING Lights also illuminate
RUDDER TRAVEL UNRESTRICTED
Indicates full rudder travel is available (approximately 22°).
PRESSURIZATION FLOW
Indicates cabin climb with a fully closed outflow valve.*
STALL INDICATION FAILURE
Illuminates to indicate: System failure. Disagreement between stall warning SYS 1 and SYS 2 compared signals. Post stall pusher system shut off by pressing either STICK PUSHER PUSH TO INHIBIT Light or by “G-Switch
MACH TRIM INOP
Illuminates when system deactivated by Mach trim compensator monitor, or when Mach Trim Comp Switch is in the OVRD position
FIRE DETECTOR LOOP
Indicates a LOOP A and / or LOOP B Light is illuminated.*
(L, R) AIR COND SUPPLY TEMP HI
Indicates air conditioning pneumatic supply exceeds normal operating temperature due to augmentation valve malfunction.*
RADIO FAN OFF (inflight)
Indicates Radio Rack Switch is in the FAN position and primary and standby fans are inoperative. NOTE Light will extinguish if Radio Rack Switch is positioned to VENTURI and venturi valve opens.
RADIO FAN OFF (ground)
Indicates primary fan is inoperative.
AUTO SPOILER DO NOT USE
Indicates malfunction in ground spoiler system or system is armed and only one main landing gear senses ground contact. Does not preclude manual operation of spoilers
WINDSHEAR INOP
Indicates Windshear Alerting and Guidance System (WAGS) is inoperative.
CARGO FIRE
Indicates smoke has been detected in a cargo compartment.
APU FAULT (ground)
Indicates APU system fault is detected.* On the Ground: APU will not start or will automatically shut down.
APU FAULT (Inflight)
Indicates APU system fault is detected.* APU will continue to operate until approximately 10 minutes after landing unless the Electronic Control Unit (ECU) detects one of the following: DC power loss, internal fault, overspeed, loss of speed sensing, or APU fire
APU OIL PRESS LOW
Indicates APU oil system pressure is too low. Light should be illuminated when starting APU and should extinguish during APU start.
FLT RECORDER OFF
Indicates recorder de-energized, or that tape broken, exhausted, or not winding properly.
ELEVATOR PWR ON
Indicates hydraulic elevator augmentor system activated.
PARKING BRAKE ON
Indicates parking brakes are set. When parking brakes are not set and light is illuminated, an anti-skid malfunction is indicated
(L, R) REVERSER ACCUMULATOR LOW
Indicates hydraulic pressure at reverser accumulator is low.
(L, R) HYD TEMP HI
Indicates hydraulic reservoir fluid temperature above normal.*
(L, R) HYD PRESS LOW
Indicates hydraulic pressure to the spoiler supply system is below normal.*
(L, R) OUTBD ANTI-SKID (L, R) INBD ANTI-SKID
Indicates malfunction of anti-skid protection for specific wheel. All lights illuminate when ANTI-SKID TEST CKT Switch is held at TEST, providing ANTI-SKID Switch is in the ARM position and Gear Handle is in the DOWN position. All lights should extinguish when switch is released. All lights will remain illuminated if ANTI-SKID Switch is in the OFF position or system malfunctions.
SPOILER / FLAP EXTENDED
Indicates speedbrakes extended with flaps extended beyond 6°.
RUDDER CONTROL MANUAL
Indicates no hydraulic power to rudder.
PWS FAIL
Indicates failure of the predictive function of the Predictive Windshear System, if equipped. (future enhancement)
TAILCONE
Indicates tailcone latching mechanism is improperly positioned.
PRINTER MESSAGE
Indicates door is open or unlocked.
WHEEL NOT TURNING (Misc)
Indicates one main gear wheel is moving 20% slower than fastest main gear wheel.
Slat DISAGREE (Misc)
Indicates left and / or right wing Slats position do not agree with each other and / or with Flap / Slat Handle position.
Slat AUTO (Misc)
Indicates Slats have automatically extended from mid to extend position by stall warning system.
Slat LAND
Indicates Flap / Slat Handle is set at more than Flaps 26 and slats are fully extended.