Amber Lights [NG] Flashcards by Sarah Fritts

Q

A

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Q

FEEL DIFF PRESS

A

When either the hydraulic system or the elevator feel pitot system fails, excessive differential hydraulic pressure is sensed in the elevator feel computer, and the light illuminates.

Excessive differential pressure can be caused by erroneous activation of the elevator feel shift module. If you lose system A or B, you will also lose FEEL DIFF PRESS.

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Q

SPEED TRIM FAIL

A

Indicates a failure of the Speed Trim function.

During recall, if the light comes on, a single-channel FCC failure has occurred.

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Q

MACH TRIM FAIL

A

Illuminates if the Mach trim system has failed.

The Mach system uses two FCC channels. If this light illuminates during recall, one of the two FCC channels has failed.

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Q

AUTO SLAT FAIL

A

Illuminates if the auto slat system has failed.

If this light illuminates during Recall, it indicates the failure of one of the two Stall Management Yaw Damper computers.

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Q

YAW DAMPER

A

Illuminates if the Yaw damper is disengaged.

The Yaw Damper will disengage if SMYD senses a yaw damper system fault, does not respond to a command, or the B FLT CONTROL switch is moved to OFF or STBY RUD. The IRS switches must be in NAV for the YAW damper to be engaged. With the loss of Hydraulic Sys B, the yaw damper is inoperative, but the YAW DAMPER light will NOT illuminate automatically.

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Q

LOW PRESSURE (FLT CONTROL)

A

Indicates that the respective hydraulic system pressure to the ailerons, elevators, elevator feel computer, and rudder is low.

This light will go out if the FLT CONTROL switch is moved to OFF or STBY RUD.

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Q

LOW QUANTITY

A

Indicates that the standby hydraulic system has less than 50% of the quantity in the reservoir.

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Q

LOW PRESSURE (STBY HYD)

A

Indicates low output pressure from the standby hydraulic pump.

This light is only armed when the standby hydraulic pump is activated and may flicker momentarily during activation.

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Q

STBY RUD ON

A

Illuminates when the electric motor-driven standby pump is commanded on to pressurize the standby rudder PCU.

The Standby Rudder System can be pressurized by placing either FLT CONTROL Switch to STBY RUD, automatic activation during takeoff or landing with flaps extended, or automatic activation of the Force Fight Monitor.

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Q

LOW PRESSURE (CENTER TANK)

A

Illuminates with pump output pressure at or below 22 psi. Turning the switch OFF will extinguish the light.

It is normal for these lights to come on during a flight when the center tank pump gets close to zero.

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Q

LOW PRESSURE (MAIN TANK)

A

Illuminates when output pressure is at or below six psi or the FUEL PUMP switch is placed OFF.

If one main tank illuminates, the MC will come on at Recall. If both tanks illuminate, the MC and annunciator will come on.

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Q

FILTER BYPASS

A

Indicates an impending fuel bypass of the fuel filter in the hydro-mechanical unit.

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Q

What does the BAT DISCHARGE illumination indicate?

A

It indicates an excessive discharge of the main and/or auxiliary batteries.

Starting the APU on battery power may cause the light to illuminate.

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Q

What does TR UNIT failure indicate on the ground?

A

Failure of TR1, TR2, or TR3.

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Q

What does TR UNIT failure indicate in flight?

A

Failure of TR1 or TR2 and TR3.

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Q

How can you determine which TR has failed?

A

Use the left selector switch.

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Q

What does the ELEC light indicate?

A

It illuminates if a fault in the Standby Power or DC Power System occurs.

This light is inhibited in flight.

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Q

When does the STANDBY PWR OFF light illuminate?

A

When one or more of the following buses are unpowered: AC standby bus, DC standby bus, Battery bus.

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Q

What does the DRIVE light indicate?

A

It illuminates when an IDG is experiencing low oil pressure caused by engine shutdown, IDG mechanical failure, IDG disconnected by activation of the DISCONNECT switch, or IDG auto-decoupling due to high oil temperature.

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Q

What does the TRANSFER BUS OFF light indicate?

A

It illuminates if an AC source does not power a transfer bus.

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Q

What does the SOURCE OFF light indicate?

A

It illuminates when no source has been manually selected to power the related transfer bus, or the manually selected source has been disconnected.

This can be a nuisance light when selecting APU power because both buses are receiving power, but the SOURCE OFF light on one side will remain illuminated until the other APU switch for that side is turned on.

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Q

What does the LOW OIL PRESSURE light indicate during APU start?

A

It comes on while the APU is starting until the oil pressure is normal. Once the APU has reached 95% or greater, if this light comes on, it will automatically shut down the APU.

If the light was illuminated when the APU switch was positioned to OFF, it will remain illuminated and then extinguish after 5 minutes. The LOW OIL PRESSURE light is disarmed when the APU switch is in the OFF position.

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Q

What does the FAULT light indicate?

A

It illuminates to indicate a malfunction exists that will cause the APU to initiate an automatic shutdown.

If the light was illuminated when the APU switch was positioned to OFF, it will remain illuminated and then extinguish after 5 minutes. The FAULT light is disarmed when the APU switch is in the OFF position.

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What does the OVERSPEED light indicate?

It illuminates when the APU RPM limit has been exceeded, resulting in an automatic shutdown, or the overspeed shutdown protection fails during a self-test at APU shutdown.

What does the OFF indication signify?

Indicates if the respective fan loses airflow due to fan failure.

What happens when the switch is selected to ALTN?

It should restore airflow, and the light will go out in approximately 5 seconds.

What occurs if an overtemperature happens on the ground?

The Crew Call Horn in the nose wheel well will sound.

What happens during a forward cargo fire warning?

The fans will shut off, and this light will be inhibited.

What does NOT ARMED indicate?

Illuminates with the switch not in the ARMED position (OFF or ON).

CAPT/FO PITOT

Indicates when electrical power is not provided to the respective probe. ## Footnote On standby power, the Captain's pitot probe is heated.

L/R ELEV PITOT

Indicates when electrical power is not provided to the respective probe.

L/R ALPHA VANE

Indicates when electrical power is not provided to the respective probe.

TEMP PROBE

Indicates when electrical power is not provided to the respective probe.

AUX PROBE

Indicates when electrical power is not provided to the respective probe.

OVERHEAT

Illuminates when embedded temperature probes sense that the window temperature exceeds approximately 43 degrees C, or if electrical power to a window is interrupted. Power will automatically be removed from the window. ## Footnote The light remains illuminated until the window has cooled; however, the system must be manually reset by resetting the WINDOW HEAT switch OFF, then ON.

COWL ANTI-ICE

Illuminates when there is excessive pressure in the duct leading from the Cowl Anti-Ice Valve to the cowl lip.

OVERHEAT (Electric Pump)

Indicates an overheat condition of the associated system at the electric pump.

ELEC LOW PRESSURE

Illuminates if the pump output pressure is low.

ENG LOW PRESSURE

Illuminates if the pump output pressure is low. ## Footnote Improper pressurization of a hydraulic system can cause foaming at higher altitudes, which is indicated by a blinking low-pressure light.

Fire Switch Effect on Low Pressure Light

This light will deactivate when the fire switch is pulled (which is why the panel is light grey).

What do proximity switches monitor in relation to doors?

Proximity switches monitor door position and illuminate the door's amber light when the door is not fully closed.

What does the amber light indicate for the FWD ENTRY door?

The amber light illuminates when the door is not fully closed.

What does the amber light indicate for the FWD SERVICE door?

The amber light illuminates when the door is not fully closed.

What does the amber light indicate for the LEFT/RIGHT FWD OVERWING?

Illuminates when an emergency exit door is not fully closed and locked or when the flight lock is not engaged, either during the takeoff roll or in-flight.

What does the amber light indicate for the LEFT/RIGHT AFT OVERWING?

Illuminates when an emergency exit door is not fully closed and locked or when the flight lock is not engaged, either during the takeoff roll or in-flight.

What does the amber light indicate for the AFT ENTRY door?

The amber light illuminates when the door is not fully closed.

What does the amber light indicate for the AFT SERVICE door?

The amber light illuminates when the door is not fully closed.

What does the amber light indicate for the EQUIP door?

The amber light illuminates when the door is not fully closed.

What does the amber light indicate for the FWD/AFT CARGO doors?

The amber light illuminates when the door is not fully closed.

ZONE TEMP (CONT CAB) indication

Illuminates when the supply duct overheats, and the associated Trim Air Modulating Valve closes. Indicates the failure of both the primary and standby temperature controls. ## Footnote If the supply duct has cooled below limits, the overheat condition may be reset using the TRIP REST button.

ZONE TEMP (FWD/AFT CAB) indication

Illuminates when a supply duct overheats and the associated Trim Air Modulating Valve closes. ## Footnote If the supply duct has cooled below limits, the overheat condition may be reset using the TRIP REST button. During Master Caution Recall, indicates a failure of the FWD or AFT cabin temp control and will cause the associated Trim Air Modulating Valve to close.

DUAL BLEED indication

Illuminates when two sources of bleed air (Engine or APU) could be pressurizing the left bleed duct. ## Footnote The following configuration exposes the APU to back-pressure: ENG 1 left bleed ON and APU bleed open OR ENG 2 (right bleed) ON, ISOLATION VALVE OPEN, and APU bleed valve open.

PACK indication

Illuminates when the primary and standby pack controls fail for the same pack or a pack overheats. ## Footnote The pack will continue to operate without control unless excessive temperatures cause the pack valve to close. The pack can be reset with the TRIP RESET switch if the pack temperature has cooled below limits.

WING-BODY OVERHEAT indication

Illuminates if a bleed air duct leak occurs, triggering an overheat sensor. The light will go out when the overheating condition is resolved. ## Footnote The TRIP RESET button will not reset this condition, as it resets valves, not sensors.

BLEED TRIP OFF indication

Illuminates for an engine bleed air overheat, or abnormal engine bleed air pressure.

What does the AUTO FAIL light indicate?

Illuminates when there is a loss of DC power, outflow valve control fault, or cabin pressurization controller fault. ## Footnote If the controller is not responding properly, it will illuminate if excessive differential pressure (>8.75 psi), excessive rate of cabin pressure change (+/- 2000 fpm), or high cabin altitude (>15,800’).

What happens when the AUTO FAIL light illuminates?

The system should automatically switch to the alternate controller, and the green ALTN light should come on. ## Footnote Switching the controller to ALTN will extinguish the amber AUTO FAIL light.

Can a dual cabin controller failure illuminate the AUTO FAIL light?

Yes, a dual cabin controller failure could illuminate the AUTO FAIL light without the ALTN light coming on.

What does the OFF SCHED DESCENT light indicate?

The light will illuminate if a descent begins before reaching the preset FLT ALT.

What can cause the OFF SCHED DESCENT light to go away?

The light will go away if the pilot changes the FLT ALT to the current altitude, returns to a climb, switches to MANUAL control mode, or lands the aircraft.

What does the PSEU light indicate?

Illuminates on the ground when designated faults are detected or an overwing exit flight lock fails to disengage when commanded.

When is the PSEU light inhibited?

The PSEU light is inhibited when the thrust levers are advanced toward takeoff power, in flight, and for the first 30 seconds after landing.

When does the PSEU light illuminate for simple faults?

The PSEU and OVHD annunciators do not illuminate for simple faults except during Master Caution Recall. After landing (>30 sec), it will illuminate for simple faults.

What extinguishes the PSEU light after landing?

It will extinguish when the parking brake is set, or when both engines are turned off.

What does the ELT light indicate?

When the ELT is activated and transmitting, the light will come on.

What activates the PASS OXY ON light?

Illuminates when the O2 system is activated either automatically (at cabin altitude of 14,000 feet) or manually.

Does the PASS OXY ON light mean the pax O2 masks have dropped?

No, the light does not necessarily mean the pax O2 masks have dropped.

What does the FLIGHT RECORDER OFF light indicate?

Indicates power failure, loss of input data, or electronic malfunction.

What should happen when the switch for FLIGHT RECORDER is moved to TEST?

Moving the switch to TEST should extinguish the light. ## Footnote Failure of the light to extinguish indicates a failed test.

What does the GPS indication signify during recall?

It indicates a single GPS failed; if both systems fail, the MASTER annunciator will illuminate. ## Footnote Go to the POS REF page 2/3 to find the failed GPS.

What does the ON DC light indicate?

It illuminates if the related IRS is operating on DC power from the switched hot battery bus (The AC power is not normal). ## Footnote On the ground, the call horn in the nose wheel well sounds to alert the crew. After 5 minutes, the AC power to the right IRS will automatically terminate.

What does the DC FAIL light indicate?

It indicates that DC power for the related IRS is not normal. If the other lights are extinguished (like ON DC), it means the IRS is operating normally on AC power.

What does the FAULT light indicate?

It indicates a system fault affecting the related IRS ATT and/or NAV modes has been detected. ## Footnote The FAULT light will come on if two consecutive entries of the same position do not pass the second internal position test.

What does the REVERSER light signify?

It illuminates when the thrust reverser is commanded to stow and extinguishes 10 seconds later when the Isolation Valve closes. If the light stays on for more than approximately 12 seconds, a malfunction has occurred, and the Master Caution lights illuminate.

What does the ENGINE CONTROL light indicate?

It illuminates when the EEC detects faults in the Engine Control System that are non-dispatchable. This is a ground-only light. ## Footnote The light only comes on when the respective engine is operating, and below 80 kts prior to takeoff or 30 seconds after touchdown.

What does the ALTN light indicate?

It indicates faults resulting in an EEC operating in a degraded mode. ## Footnote This light could also come on during a DISPLAY SOURCE issue and a fault with the Display computer.

What does AUTOBRAKE DISARM indicate?

Illuminates when RTO is selected, if RTO is selected while airborne, if the switch is set to 1-MAX or more with invalid arming conventions, or when disarmed by pilots. ## Footnote Autobraking will not be available upon landing if RTO is selected.

What conditions cause the AUTOBRAKE DISARM light to come on after landing?

Fault in the antiskid system, fault in the autobrake system, or invalid input from one ADIRU.

How can pilots disarm the autobrake?

By manual braking with enough pressure, moving the speedbrake to DOWN detent, or moving the thrust levers out of idle for more than 3 seconds. ## Footnote This will also trigger the AUTOBRAKE DISARM light.

What does ANTISKID INOP indicate?

Indicates a failure of the antiskid system or a fault in the parking brake system.

What does LE FLAPS TRANSIT indicate?

Illuminates when any LE device is in transit, not in the programmed position, or during alternate flap extension until fully extended. ## Footnote The LE FLAPS TRANSIT light is inhibited during auto-slat operation in flight.

What does BELOW G/S P-INHIBIT indicate?

Illuminates with excessive deviation below the glideslope, accompanied by an aural 'glideslope' call. ## Footnote Pushing the BELOW G/S P-INHIBIT light inhibits the glideslope caution below 1000' RA.

What conditions cause FMC P-RST to illuminate?

Illuminates when the FAIL light on the MCDU is on, an alerting message exists for both MCDUs, ND RUNWAY DISAGREE alert, UNABLE REQ NAV PERF-RNP, or specific Engine Display/MCDU scratchpad alert messages. ## Footnote If you push the switch, the light will go out, but resolve the issue first.

What does SPREEDBRAKE DO NOT ARM indicate?

Indicates an abnormal condition or abnormal test inputs to the automatic speedbrake system. ## Footnote It will illuminate on landing rollout if the wheel spin-up signal is lost after the speed brakes have deployed.

What does STAB OUT OF TRIM indicate?

Illuminates when the A/P is not trimming the stabilizer properly. ## Footnote It will only come on if A/P is engaged, and it has two bulbs for different failure causes.

What does the SPEED BRAKE EXTENDED light indicate in flight?

Illuminates when the speed brake is beyond the ARMED detent and either TE flaps are extended more than Flaps 10 or radio altitude is less than 800 ft.

When does the SPEED BRAKE EXTENDED light illuminate on the ground?

Illuminates if the SPEED BRK lever is DOWN and hydraulic pressures of 750 psi or greater are sensed in the ground spoiler extend lines.

What does the A/P P/RST light indicate when flashing amber?

Indicates that the A/P automatically reverts to CWS pitch or roll while in CMD.

What does a steady amber light on the A/P P/RST indicate?

Indicates that the TEST switch is held in position 1.

What does the A/T P/RST steady amber light indicate?

Indicates that the TEST switch is held in position 1.

What does the A/T P/RST flashing amber light indicate?

Indicates an A/T airspeed error where airspeed differs from the commanded value by +10 or -5 kts and does not approach the commanded value in flight with flaps out. ## Footnote This option comes standard on the MAX aircraft.

What conditions cause the GND PROX INOP light to illuminate?

Illuminates when there is a GPWC malfunction, power loss, GPWC cannot calculate windshear conditions, invalid inputs are received, or a DEU fails.

What happens to the GND PROX INOP light if the FLAP INHIBIT switch is positioned to INHIBIT?

The light will illuminate if flaps 15 landing are selected with an airspeed greater than 250 kts for 60 seconds until the airspeed is reduced below 250 kts.

What does the ENG 1/2 OVERHEAT light indicate?

Illuminates if the engine's temperature expands the gaseous loops enough to close the overheat pressure switch. ## Footnote Both loops must sense a fire or overheat condition.

What does the FAULT light indicate?

Illuminates in the event of a dual loop failure. ## Footnote It illuminates during a fire test. If it does not illuminate during the test, it indicates a failed test.

What causes the APU DET INOP light to illuminate?

Failure of the APU fire loop causes the light to illuminate. ## Footnote It indicates a failed test if it does not illuminate during the fire test.

What does the APU BOTTLE DISCHARGED light indicate?

Illuminates after rotating the APU fire handle, and the bottle is discharged.

What does the L/R BOTTLE DISCHARGED light indicate?

Illuminates after rotating the respective fire handle, and the bottle is discharged.

What does the DETECTOR FAULT light indicate?

It indicates that one or more detectors in the selected detection loops in either cargo compartment have failed.

What does the DISCH light signify?

It illuminates once the bottle contents are discharged. ## Footnote The switch must be pushed for a minimum of 1 second, and the light may take up to 30 seconds to illuminate.

What does the LOCK FAIL light indicate?

It illuminates when the FLT DK DOOR lock selector is in AUTO, the door lock has failed, or the Flight Deck Access switch is OFF. ## Footnote The most common reason this light illuminates is that the red FDAS switch by the door is switched off.

What happens when the AUTO UNLK light illuminates?

It illuminates, and an aural chime sounds when the correct emergency access code is entered with the FLT DK DOOR selector in AUTO.