Overhead Panel Flashcards by Cameron Howard

What does #1 mean when illuminated?

Signals that the ELT signal is being transmitted or during a test

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What does it mean if one of the lights on number 3 is illuminated?

A latch fault has occurred

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What does it mean if #5 illuminates?

That one of the pressure sensors (#4) has a fault

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What does #4 do?

It unlocks the cockpit door during a rapid pressure change

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What is #1 used for?

Maintenance and to check the CVR on certain of our aircraft

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What does #3 do? When does the blue hydraulic pump automatically turn on?

It turns on the blue electric pump manually, as long as the normal blue hydraulic switch is in AUTO. If the normal blue hydraulic pump is OFF, the OVERRIDE switch will not work. The blue electric pump automatically operates in flight, and on the ground if one engine is running.

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What does #4 do? What will happen if this button is pressed but the respective engine fire PB is selected out?

It allows you to power the FADEC’s on the ground to check the oil levels. Won’t work if the respective engine fire PB is selected out.

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When is #1 illuminated? How long will each IR stay on battery power?

It’s illuminated when one or more IR’s is supplied by the aircraft battery only. Also illuminates momentarily during a full alignment, but not a fast alignment. ADIRS 2 and 3 will only remain on battery power for 5 minutes to hold alignment until a generator can be restored. ADIRU 1 (or 3 if the captain selected ADIRU 3 on the switching panel) will remain in battery power until either a generator is restored or battery #2 fails.

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What does it mean if the #2-4 fault light is flashing

Heading and attitude may be recovered in ATT mode, but the other IR functions are lost.

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What does it mean if the #2-4 fault light is steadily illuminated?

The respective IR is lost.

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What happens if the #2-4 PB’s are pressed?

The respective OFF light illuminates and the IR data output is disconnected

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What does a fault light on 5-7 mean?

There was a fault with the respective air data reference computer

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What does the fault light on #1 mean? What makes the fault light go away?

It illuminates when an ELAC 1 fault is detected or during the ELAC power up test (in that case it lasts about 8 seconds). Pressing the ELAC 1 PB to OFF makes the fault light go away, or it goes away after the power up test is completed satisfactorily.

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What are #1’s functions

Normal aileron control
Normal elevator and THS control
Normal pitch and roll
Direct pitch and roll
Alternate pitch
Abnormal attitude
Aileron droop
Acquisition of autopilot orders

ELAC 1 normally controls the ailerons while 2 controls the elevator and THS. Should one fail the other can pick up the duties of the other.

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What are the functions of #2?

Normal roll (by controlling the spoilers)
Direct roll
Direct pitch (SEC 1 + 2 only)
Alternate pitch (SEC 1 + 2 only)
Abnormal attitude
Speed brakes and ground spoilers

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what are the functions of #3?

Normal roll (turn coordination and yaw damping)
Rudder trim
Rudder travel limit
Alternate yaw

Yaw (turn coordination, yaw damping, rudder trim, rudder travel limit)
Airspeed protection calculation
Wind shear alerts (reactive, not predictive)
Low energy warning (“speed, speed, speed”)

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What does pushing the #1 push button do? What does the EVAC and ON lights mean on #1?

Pushing the button signals the need to evacuate. When pushed…
-The evacuation tone in the cabin sounds
-The FWD and AFT attendant panels flash
-The EVAC light flashes red in the flight deck
-A flight deck EVAC horn sounds

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What does pressing #2 do?

It turns off the EVAC horn in the cockpit

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What does #3 do in the CAPT position vs the CAPT & PURS position?

In the CAPT & PURS position an evacuation alert can be initiated from either the flight deck or the cabin.
In the CAPT position an evacuation alert can only be initiated from the flight deck (thus, if the CMD push button on a flight attendant panel is pressed, only the flight deck evacuation tone sounds for 3 seconds)

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What does pressing #5 do? How is it different than the normal “GEN 1” push button on the electrical panel?

5 is different than the GEN 1 push button because when that button is pushed there ISN’T a fuel pump in each wing still powered by GEN 1

Pressing GEN 1 LINE opens the GEN 1 line contactor, which means AC BUS 1 is supplied power from GEN 2 through the bus tie contactor. However, when GEN 1 LINE is pressed a fuel pump in each wing tank remains powered by GEN 1.

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When does SMOKE illuminate on #5? If smoke is illuminated, what other lights on the overhead panel will be illuminated?

It illuminates when smoke is detected in the avionics ventilation system. NOTE: smoke will continue to be illuminated even when GEN 1 LINE is pressed, as long as smoke is detected in the avionics compartment.

When smoke is illuminated, the BLOWER and EXTRACT fault lights should also be illuminated

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What does the fault light on #6 mean?

It means that AC BUS 1 and AC BUS 2 lost power and its not being supplied by the emergency generator

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What does #7 do? How is it different than the similar button on the hydraulics panel?

Pushing the MAN ON button on this panel deploys the RAT and it connects the emergency generator. The “RAT MAN ON” on the hydraulics panel deploys the RAT but does NOT connect the emergency generator.

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With #7 in “AUTO” when does the RAT deploy? How long does it take the RAT to begin powering the aircrafts electronics?

The RAT should automatically deploy when AC BUS 1 and AC BUS 2 are not powered, and airspeed is greater than 100 knots

The RAT takes about 8 seconds to begin powering the aircraft (3 seconds to deploy, 5 seconds to provide pressure to the blue hydraulic system)

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What does the fault light on #1 mean? What does pushing the PB do?

The fault light comes on with an associated ECAM message if the predictive modes of GPWS fail. This does NOT affect the basic modes of GPWS. Pushing the PB inhibits the predictive modes of GPWS

What does the fault light on #2 mean? What happens when you push the PB?

The fault light illuminates with an associated ECAM message if the basic GPWS modes fail. Pushing the PB inhibits basic GPWS modes 1-5, and triggers an associated ECAM caution NAV GPWS FAULT

When is the CVR automatically recording? What does PB #6 do?

The CVR is automatically energized on the ground for the first 5 minutes following electrical power application, on the ground with at least one engine running, in flight, and continues running for 5 minutes after the last engine is shut down. Pushing the PB, which then illuminates “ON”, manually turns on the CVR outside of when it would automatically energize. This is done to ensure that the CVR captures our preflight briefing.

What does pushing #8 do?

When pressed a low frequency tone is heard through the flight deck loud speaker to let you know the CVR is working. On some newer models you have to actually plug in your headset in order to hear the tone.

What does pressing number #9 do? What does it do in AUTO mode?

Pressing the MASK MAN ON button manually sends the signal to drop the passenger masks. In AUTO mode the mask should automatically deploy when the cabin pressure altitude exceeds 14,000’

What does the SYS ON light on #10 mean?

It means that the signal to open the mask doors was sent. It remains on until the OXYGEN TMR RESET pushbutton is pushed on the overhead panel.

What does the OFF light on #11 mean? When the OFF light is illuminated, what happens when the PB is pressed?

The OFF light means the cockpit oxygen supply valves are closed. When the PB is pressed the oxygen supply valves open, allowing O2 to flow the masks, and the OFF goes away.

What does pressing #1 do?

Pressing the MECH button illuminates the “cockpit call” light on the external power panel, and sounds an external horn. When the button is released the horn turns off but the light remains illuminated until the reset button is pushed on the external power panel.

What do the #2 buttons do? What kind of call is made to the FA’s when these buttons are pushed?

It flashes pink on the associated attendants station and sounds a high/low chime in the associated area. We push these buttons to give the flight attendants a cabin advisory (no passenger evacuation is required). Here’s what to include in an advisory. -Announce giving a cabin advisory -Nature of the irregularity -Advise of new flight plan -Remind the F/A’s that an emergency preparation is not anticipated

What does pressing #3 do? What kind of call are we making to the F/A’s when we press this button?

Pressing this PB illuminates the call lights on all flight attendants stations and sounds 3 high/low chimes in the cabin. We press this button to advise the flight attendants of an emergency preparation (means passengers may need to evacuate or brace). The items to include in emergency preparation call are T - Type of emergency E - Evacuation anticipated? S - review Signals to brace, remain seated, and evacuate (3 times) T - Time remaining until landing

When is #4 inhibited? When can it be used?

It’s inhibited on the ground with the engines off. It can be used in moderate to severe precipitation only.

Above what speed are we limited from using #5?

230kias

What does pressing #2 do? How do you know if it’s a successful test?

Pressing #2 tests the ENG 1 fire detection system. It’s a successful test if you see the following items -Illuminates both SQUIB lights -Illuminates both DISCH lights -Illuminates the ENG FIRE PB lights -Flashes the MASTER WARN lights -Illuminates the FIRE lights on the ENG panel -Activates the ENG FIRE ECAM warning -Sounds the “continuous repetitive chime” (CRC)

What does the SQUIB light mean on #1? The DISCH light?

The SQUIB light means the ENG FIRE PB is released out and the squib is armed. The DISCH light means the halon bottle has lost pressure.

What happens when #3 is released out?

8 things happen -Squibs are armed -CRC is cancelled -GEN 1 is deactivated -FADEC power supply is removed -Fuel low-pressure valve is closed -Engine bleed valve is closed -Hydraulic fire shutoff valve is closed -Pack flow control valve is closed

What does releasing #5 out do?

8 things happen -CRC is cancelled -Squib is armed -APU gen is deactivated -APU shuts down -APU low pressure fuel valve closes -APU bleed valve closes -Crossbleed valve closes -APU fuel pump shuts off

What does pressing #7 do? Is it different under battery power? Are there any concerns when pressing #7?

-Activates the CRC -Activates the APU FIRE ECAM warning -Illuminates the APU FIRE pushbutton light -Flashes the MASTER WARN lights -Illuminates the SQUIB lights -Illuminates the DISCH lights Under battery power the APU FIRE pushbutton lights will only be partially illuminated The automatic shutdown of the APU and discharge of the APU fire extinguisher may occur if the test button is pressed for more than 3 seconds

What do the fault lights on #1 and #5 mean? What does pressing these buttons do?

Fault light means -Reservoir low level -Reservoir overheat -Reservoir low air pressure -Pump low pressure Pressing the PB illuminates the OFF light, turns off the FAULT light (except in the case of an overheat), and depressurizes the pump, leading to a ceasing of hydraulic power generation.

What happens if #2 is pressed? What if it’s pressed when the plane is unpowered?

When RAT MAN ON is pressed the RAT deploys but the emergency generator is not connected. If the plane is not powered the RAT will still deploy so care must be taken to avoid injuring ground crew.

What does the fault light on #3 and on #6 mean? What happens if the button is pushed?

Fault light means… -Reservoir low level -Reservoir overheat -Reservoir low air pressure -Pump low pressure -Pump overheat Pushing the buttons turns off the pump, illuminates the OFF light, and turns off the FAULT light (except during an overheat)

What does the fault light on #4 mean? What happens if you press the button? When does the PTU operate automatically? When is it inhibited?

Fault light means… -Green or yellow reservoir overheat -Green or yellow reservoir low air pressure -Green or yellow reservoir low level If you press the button it switches between AUTO and off The PTU operates automatically when the green/yellow differential pressure is greater than 500 PSI The PTU is inhibited during the first engine start and automatically tested during the second engine start

What do the fault lights on #1 and #5 mean? What happens when the buttons are pushed?

Low delivery pressure and comes with an associated ECAM message. When the buttons are pushed the pumps are deactivated.

What does the OPEN light on #6 mean?

It means the cross feed valve is open

What does the fault light on #3 mean? The MAN light? What does pressing that PB do?

Fault light Illuminates amber when the center tank has more than 550lbs of fuel and the left or right wing tank has less than 11,000lbs of fuel Man light illuminates when the button is pressed and allows manual control of the center tank transfer valves with the CTR TK XFR pushbuttons

What do the fault lights on #2 and #4 mean?

Fault light illuminates when the associated wing tank overflows

What does pushing #1 do? What does the off light mean?

When the off light is illuminated, none of the commercial electrical loads are supplied (cargo lights, water/toilet, galley, passenger entertainment, etc.)

What does the fault light on #2 mean?

The fault light illuminates any time one of the generators is above 100% of its rated output

What does the fault light on #3 mean? What does pressing the button do?

Fault light means high IDG oil temperatures or low IDG oil pressure. Pressing the PB physically disconnects the IDG from the engine and can only be reset on the ground by MX. You must only press the button when the fans are turning to avoid damaging the IDG. Additionally the IDG will automatically disconnect if the temperature reaches 200ºC.

What does a fault light on #4 mean?

It illuminates, along with an associated ECAM caution message, if a protection trip is initiated by the generator control unit, or the line contactor opens without selecting the GEN 1 pushbutton to OFF

What does the fault light on #6 mean?

Illuminates if a protection trip of the APU GEN is initiated by the generator control unit, or the line contactor opens without selecting the APU GEN pushbutton to off.

What does the OFF light mean on #7?

Means that both bus tie contactors are open.

What does the FAULT light mean on #9? The ALTN light?

Fault illuminates when the AC ESS BUS is not powered, and an associated ECAM message appears. ALTN illuminates when the AC ESS BUS is being powered by AC BUS 2.

What do the FAULT lights on #10 mean?

Illuminates when the charging current for the corresponding battery is outside of limits.

When is the flow automatically set to high?

During single pack operation or when bleeds are supplied by the APU

What does the FAULT light on #2 and #8 mean?

Illuminates when the pack flow control valve position disagree with the selected position, the compressor outlet overheats, or the pack outlet overheats.

What do the fault light on #3 and #7 mean?

-Bleed overpressure downstream of the engine bleed valve -Bleed overheat -Bleed leak (wing or cowl) on associated side -Bleed valve not closed during engine start -Bleed valve not closed with APU BLEED PB pushed ON -HP valve failed open on the ground -BTS failure (single BTS failure) or BTS disagree on the ground -BTS failure (dual BTS failure)in flight or on the ground -Fan Duct burst detected by the FADEC (LEAP-1A engine only)

What does #4 do when pressed?

If Delta P < 1 PSI: If DITCHING PB is lights out: The ram air inlet will open and airflow will be supplied directly to the mixing unit The outflow valve will open to approximately 50% If Delta P >= 1 PSI: The ram air inlet remains closed The outflow valve position remains normal

What does the fault light on #9 mean? When does the FAULT light extinguish?

Fault light illuminates amber when a duct overheat is detected (88ºC+), and an associated ECAM caution message appears. If this occurs the hot air pressure regulating valve, and trim air valves, automatically close. The FAULT light will extinguish when the temperature drops below 70ºC AND the HOT AIR pushbutton is selected to OFF

What does the FAULT light on #1 mean? What does pressing the PB do?

The fault light illuminates when the wing anti-ice valve position disagrees with the selected position, or when low pressure is detected. (The light also temporarily illuminates when the valve is in transit) Pressing the button opens and closes the wing anti-ice valve. On the ground the valve only opens for 30 seconds and then automatically closes. In the air the valve stays open until it’s selected off.

What do the FAULT lights on #2 and #3 mean? What happens when the button is pressed?

FAULT light illuminates when the engine anti-ice valve position disagrees with the selected position, and temporarily when the PB is in transit.

What does #4 do in AUTO? What does pressing the PB do?

In AUTO it provides automatic heating of the probes and windows in flight, or on the ground when at least one engine running (excluding the TAT probes). Pressing the button provides continuous heating of the probes and windows

What does pressing #6 do? What does the fault light mean?

Pressing number 6 allows manual control of the outflow valve by moving the MAN V/S CTL switch. The UP position on the MAN V/S CTL switch OPENS the outflow valve, and INCREASES the cabin altitude (which you’d want to do when climbing to not exceed the differential pressure limits). The FAULT light illuminates when both automatic systems are faulted, but extinguishes when MAN mode is selected.

What does #7 do in the AUTO position? Other positions?

In the AUTO position the aircraft will automatically control pressurization based on the FMGS altitude for the departure and destination airports. In any position other than auto, the automatic pressurization uses the selected altitude rather than the FMGS altitude.

What does #8 do when pressed?

Commands the pressurization controller to close the outflow valve, emergency ram air inlet, avionics ventilation inlet, extract valves, and pack flow control valves. It keeps the fishies out. NOTE: the outflow valve will not automatically close if the MODE SEL pushbutton is selected to MAN

What happens when #1 is pressed on? Off? What does the fault light mean?

When pressed on… -ON light illuminates -ECB power-up test is initiated -APU air inlet flap opens -APU fuel isolation valve opens -If no fuel tank pump is running, the APU fuel pump runs -If external power or main generator is supplying power, the APU systems page displays When pressed off… -ON and AVAIL lights extinguish -If APU bleed air was used the APU shuts off after 60 to 120 seconds (batteries must remain on) -At 7% the APU air inlet flap closes Fault light illuminates for an automatic APU shutdown. This can happen for various reasons including fire, closed inlet flaps, over speed, no acceleration, etc.

When does SMOKE illuminate on #2 and #4?

It illuminates when both channels detect smoke in their respective cargo compartments, or when one channel detects smoke and the other channel is faulty.

What does pressing #1 or #5 do?

Ignites the squib and sends the halon into the respective compartment (FWD or AFT) but not both. There is only halon for one of the two compartments but not both, as they share the same halon bottles.

What does pressing #3 do?

-Tests the smoke detectors -Illuminates the red SMOKE lights and the amber DISCH lights -Closes the ventilation systems isolation valve

What do the FAULT lights on #6 and #7 mean?

Blower FAULT: -Blowing pressure is low -Duct overheat -Computer power supply failure -Smoke warning is activated Extract FAULT: -Extract pressure is low -Computer power supply failure -Smoke warning is activated

What does #9 do when pressed?

Initiates the manual start sequence of the associated engine when the ENG MODE selector is set to IGN/START, Or Initiates the wet cranking process of the associated engine when the ENG MODE selector is set to CRANK and the ENG MASTER lever is set to ON, Or Initiates the dry cranking process of the associated engine, when the ENG MODE selector is set to CRANK and the ENG MASTER lever is set to OFF