Switches and Light Guide - Feb 21 Update Flashcards by Robert Thompson

LIGHTS & SWITCHES -

ADIRS ADR 1/2/3 Push Button

Fault Light - Fault in Air Data Reference computer
OFF Light - Selected ADR is off

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LIGHTS & SWITCHES -

ADIRS IR 1/2/3 Push Button

OFF
- Inertial data output disconnected
Fault Light
- Steady Fault Light - Fault in IR
- Flashing Fault Light - Attitude and Heading may be recoverable in ATT mode.
Align Light (Older Aircraft only)
- Steady Align Light - Normal during align (10min)
- Flashing Align Light -
  - No position entered in 10 min
  - Bad position (1 degree difference between shutdown and entered)
  - Fault

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LIGHTS & SWITCHES -

ADIRS IR 1/2/3 Rotary Selector

Off - ADIRU is deactivated, both ADR and IR are unavailable
NAV - Normal mode supply full inertial data
ATT - Attitude and Heading only supplied
- Enter mag heading using keyboard
- Should be entered every 10 minutes

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LIGHTS & SWITCHES -

ADIRS ON BAT Light

Self test during alignment
One or more IRs are on battery power
- IR2 and IR3 are lost after 5 min on bat power only.
  - If CAPT3 is selected IR1 and IR2 are lost.

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LIGHTS & SWITCHES -

AIR COND Panel APU BLEED push button

ON light (white)
- Opens valve when pushed and
  - N>95%
  - No leak
OFF
- APU Valve closes
FAULT light (amber)
- Leak detected

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LIGHTS & SWITCHES -

AIR COND Panel ECON FLOW push button

ON
- ECON flow is selected. 80% of normal flow. Will automatically go to 100% if it cannot meet the cooling demand.
OFF
- 100% of the normal flow.

The system goes to 120% of normal in single pack operation or APU bleed supply.

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LIGHTS & SWITCHES -

AIR COND Panel ENG 1/2 BLEED push button

Pushed
- Opens bleed valve unless
  - Leak
  - Overheat
  - Overpressure
  - Start valve open
  - APU bleed valve open (or pb ON)
  - Air 8psi or less (15psi for NEO)
  - FIRE push button released
  - At least one bleed consumer is on (NEO/722/23)
FAULT light (amber) (LOOSA-BFH)
- Leak
- Overheat
- Over pressure downstream
- Start in progress and valve not closed
- APU Bleed on and valve not closed
- Dual BTS Failure (NEO/722/23)
- Single BTS failure or fault on ground (NEO)
- Fan duct burst (NEO)
- HP Valve failed open on ground (NEO)
OFF light (white)
- Bleed valve closed
- HP valve closed
- Fan air valve closed (NEO)

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LIGHTS & SWITCHES -

AIR COND Panel HOT AIR push button

FAULT light (amber)
- Overheat detected, and automatically closes:
  - Hot air valve
  - Trim valves
OFF light (white)
- Hot air valve closed
- Trim air valves closed

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LIGHTS & SWITCHES -

AIR COND Panel PACK 1/2 push button

Pushed
- Opens pack valve unless:
  - Ditching switch selected
  - Overheat in compressor outlet
  - Start in progress
  - Air pressure low
  - FIRE push button released
FAULT light (amber)
- Overheat of compressor outlet or pack outlet
- Disagreement if valve position
OFF light (white)
- Pack flow control valve closed

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LIGHTS & SWITCHES -

AIR COND Panel PACK FLOW selector

LO
- 80% - Select if less than 115 passengers
- Will automatically go to 100% if the cooling demand cannot be met.
NORM
- 100% - Select if 115 or more
HI
- 120% - Select if abnormally hot and/or humid
- In single pack or with APU Bleed supply the system goes to HI automatically.

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LIGHTS & SWITCHES -

AIR COND Panel RAM AIR push button

ON light (white)
- If Delta P is less than 1 psi and DITCHING pushbutton is in the normal lights out position:
  - RAM AIR inlet opens
  - Outflow valve opens 50% if not being manually controlled

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LIGHTS & SWITCHES -

AIR COND Panel COCKPIT/FWD/AFT Tempurature Selectors

Commands sent to Zone Controller or Air Conditioning System Controller depending on the aircraft which control the temperature via trim air valve.

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LIGHTS & SWITCHES -

AIR COND Panel X BLEED rotary selector

SHUT
- Closed
AUTO
- Opens if:
  - APU Bleed valve is open
- Closed if:
  - APU Bleed valve is closed
  - Wing, Pylon and APU leak (except during start)
OPEN
- Open

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LIGHTS & SWITCHES -

ANTI ICE Panel ENG 1/2 push button

OFF
- Engine anti-ice valve closes
FAULT light (amber)
- Valve disagreement
- Breifly as valve transits
ON light (blue)
- ENG A. ICE memo on ECAM
- NAI appears on E/WD when in TOGA or FLX/MCT detents
- Respective valve open if air available

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LIGHTS & SWITCHES -

ANTI ICE Panel WING push button

OFF
- Wing anti-ice valves close
FAULT light (amber)
- Low Pressure
- Either valve disagreement with push button
- Breifly as the valves transit
ON light (blue)
- WING A. ICE memo on ECAM and WAI on E/WD in TOGA/MCT/FLEX
  - In flight, both valves open if air available
  - On the ground, both valves open for 30 second test sequence

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LIGHTS & SWITCHES -

APU Panel MASTER SW Push Button

FAULT Light (amber)
- Auto shutdown for many reasons
- Fire will only cause auto shutdown on ground
ON light (blue)
- ECB self test
- Flap opens
- Fuel isolation valve opens and fuel pump on
- ECAM page appears
OFF
- MASTER SW ON light and START AVAIL light extinguish
- Shutdown delay 60-120 seconds if APU bleed used
- Flap closes at 7%

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LIGHTS & SWITCHES -

APU Panel START Push Button

AVAIL light (green)
- N> 99.5%
- N> 95% for 2 seconds
ON light (blue)
- APU starts

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LIGHTS & SWITCHES -

CABIN PRESS Panel DITCHING push button

Closes
- Avionics Ventiliation Inlet and Extract valves
- Both Pack flow control valves
- Ram Air inlet valve
- Outflow valve
  - Only if under AUTO control

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LIGHTS & SWITCHES -

CABIN PRESS Panel LDG ELEV selector

AUTO
- Landing elevation from FMGS being used to control pressurization schedule
-2 through 14
- Pull out and turn to select landing field elevation if not in FMGS database

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LIGHTS & SWITCHES -

CABIN PRESS Panel MAN V/S CTL switch

UP/DN
- Commands manual motor to modulate outflow valve according to V/S selected using switch (displayed on ECAM)
- Operatesonly when MODE SEL in MAN

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LIGHTS & SWITCHES -

CABIN PRESS Panel MODE SEL Push Button

AUTO
- 2 Auto systems automatically transfer control
  - 70 sec after each landing
  - if operating system fails
- Deselection for 10 seconds may switch system being used.
FAULT light (amber)
- Both Auto systems have failed
MAN light (white)
- Activates MAN V/S CTL toggle switch

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LIGHTS & SWITCHES -

CALLS Panel EMER CALL from Flight Attendant Panel

ATT Light flashes on ACPs
CALL light in the EMER push button flashes
Three long buzzers sound

Inhibited during takeoff and landing.

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LIGHTS & SWITCHES -

CALLS Panel EMER Push Button

When Pushed:
- ON and CALL lights flash in push button
- Illuminates EMERGENCY CALL Light on all F/A Panels
- 3 High/Low Chimes sound
- Pink Light at all F/A Call panels
CALL or ON light flashing
- Emergency call from Cockpit to Cabin or vice versa

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LIGHTS & SWITCHES -

CARGO HEAT Panel AFT ISOL VALVE push button

FAULT light (amber)
- Inlet or Outlet valve disagreement
OFF light (white)
- Inlet and outlet isolation valves close
- Trim air valve closes
- Extraction fan stops
AUTO (dark)
- Inlet and outlet isolation valves open
- Extraction fan on (if no smoke detected)

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LIGHTS & SWITCHES - CARGO HEAT Panel HOT AIR push button

* FAULT light (amber) * Duct overheat * OFF light (white) * valve closes * AUTO (dark) * Valve regulates hot air pressure

LIGHTS & SWITCHES - CARGO SMOKE panel DISCH switches

* Pushed * Ignites squib and discharges single bottle into corresponding compartment.

LIGHTS & SWITCHES - CARGO SMOKE Panel FWD/AFT push buttons

* SMOKE light (red) * Smoke detected by * By both channels * By one channel and other failed * DISCH light (amber) * bottle pressure low

LIGHTS & SWITCHES - COCKPIT DOOR Panel Light

* OPEN light (amber) * Steady * Door not fully closed and not fully locked * Flashing * Cabin crew has begun the Emergency Access process. If no flight deck action is taken door will unlock after predetermined time (15-120 sec) * FAULT light (red) * System failure * Latch, control unit, pressure sensor, etc

LIGHTS & SWITCHES - COCKPIT DOOR panel switch

* UNLOCK * Pulled and held releases lock so door can be opened from cabin * NORM * Only EMERGENCY access available from cabin * LOCK * Emergency access, buzzer and keypad are inhibited for a predetermined time (5-20 min)

LIGHTS & SWITCHES - ELEC Panel AC ESS FEED push button

* FAULT light (amber) * AC ESS Bus not powered * ALTN light (white) * AC2 Bus supplies AC ESS BUS * Normal (dark) * AC1 Bus supplies AC ESS BUS

LIGHTS & SWITCHES - ELEC Panel APU GEN push button

* FAULT light (amber) * GCU Trip * Line contactor open * other than by push button or EXT PWR on * inhibited at low speed * OFF light (white) * Generator will not power electrical system * Fault circuit reset * Pushed (dark) * If EXT PWR and engine generators not in use, APU powers electrical system

LIGHTS & SWITCHES - ELEC Panel BAT 1/2 push buttons

* AUTO * Battery contactors are closed when: * APU start (max 3 min during EMER GEN operation) * Battery voltage \<26.5 until \<4 amps (after 30 min delay in flight) * AC1 and AC2 buses are unpowered and \<100 kts or EMER GEN is not supplying power * Battery contactors are open if battery voltage is low (on the ground with no power supply) * FAULT light (amber) * Battery charger is out of limits * OFF light (white) * Battery contactors are open (light powered by DC BAT BUS)

LIGHTS & SWITCHES - ELEC Panel BUS TIE push button

* AUTO * Automatically closes one or both contactors to maintain power supply to AC1 and AC2 based on aircraft priority system * OFF light (white) * Both bus tie contactors open

LIGHTS & SWITCHES - ELEC Panel COMMERCIAL push button

* ON * Powers * Cabin and cargo lights * Toilets * Drain mast ice protection * Galleys * IFE (Not LiveTV) * OFF * Above equipment unpowered

LIGHTS & SWITCHES - ELEC Panel EXT PWR push button

* AVAIL light (green) * Plugged in and power parameters are normal * ON light (blue) * EXT PWR push button is selected on * If engine generators are supplying system, ON light will be illuminated until the EXT PWR push button is deselected and removed from the tie bus. * External power has priorirty over the APU generator. Engine generators have priority over external power.

LIGHTS & SWITCHES - ELEC Panel GALLEY push button

* AUTO * Powers * Main galley\* * Secondary galley * IFE\* \* Main Galley and IFE are shed when only one generator is operating. (Except only IFE is shed if on the ground with APU Gen or EXT PWR) * FAULT light (amber) * Any generator load \> 100% * OFF light (white) * Both galleys and IFE are unpowered

LIGHTS & SWITCHES - ELEC Panel GEN 1/2 push button

* FAULT light (amber) * GCU Trip * Line contactor open (other than by push button) * OFF light (white) * Generator will not power electrical system * Fault circuit reset * Pushed (dark) * Generator powers electrical system

LIGHTS & SWITCHES - ELEC Panel IDG 1/2 push button

* FAULT light (amber) * High Oil Tempurature * Low Oil Pressure (inhibited below 14% N2) * Pushed * Disconnects IDG * Can only be reconnected on the ground * CAUTION the following may cause damage * Holding the push button for more than 3 seconds * Disconnecting an engine that is not running or windmilling

LIGHTS & SWITCHES - EMER ELEC PWR Panel RAT and EMER GEN TEST push button

* Guarded * Used by MX to test the Emergency Generator connecting to the aircraft electrical system

LIGHTS & SWITCHES - EMER ELEC PWR Panel GEN 1 LINE push button

* SMOKE light (amber) * Smoke detected in avionics compartment * OFF light (white) * GEN 1 is disconnected from AC 1 bus (GEN 2 then powers AC 1) * GEN 1 powers the number 1 fuel pump in each wing tank

LIGHTS & SWITCHES - EMER ELEC PWR Panel MAN ON push button

* AUTO * Automatically extends the RAT which powers the Blue Hydraulic system which drives the emergency generator when: * AC1 and AC2 are unpowered * aircraft speed \> 100kts * MAN ON * Manually extends the RAT and connects the emergency generator to electrical system. * Emergency generator coupling occurs 3 sec after RAT supplies the emergency generator.

LIGHTS & SWITCHES - EMER ELEC PWR Panel RAT and EMER GEN fault light

* FAULT light (red) * The emergency generator is not supplying power when AC BUS 1 and 2 are not powered.

LIGHTS & SWITCHES - Engine Control Panel ENG 1/2 Fire/Fault Light

* FIRE (red) * Illuminates when fire is detected in respective engine * FAULT (amber) * Automatic start abort * HP fuel valve disagreement * Thrust control malfunction

LIGHTS & SWITCHES - EVAC Panel COMMAND Button

* EVAC Light - Flashes when COMMAND is pressed * ON Light - * EVAC Lights flash at FA panels * Evacuation tone sounds

LIGHTS & SWITCHES - FIRE Panel AGENT (1/2/APU) push buttons

* SQUIB light (white) * Squib is armed (after FIRE push button is popped) * DISCH light (amber) * Bottle has lost pressure

LIGHTS & SWITCHES - FIRE Panel APU FIRE push button

* Released (popped) * Shuts down APU * Silences CRC * Arms squib * Closes LP fuel valve * Shuts off APU fuel pump * Deactivates APU Generator * Closes APU Bleed Valve * Closes X Bleed valve

LIGHTS & SWITCHES - FIRE Panel APU TEST push button

* Pushed * CRC + MASTER WARN light * ECAM * APU FIRE push button light\* * SQUIB light\* * DISCH light\* * \* If DC power only

LIGHTS & SWITCHES - FIRE Panel ENG 1/2 FIRE push buttons

* Released (popped) * Silences CRC * Arms squibs * Closes hydraulic fire shutoff valve * Closes LP fuel valve * Deactivates Generator * FADEC power supply is removed * Closes the engine bleed valve * Closes Pack flow control valve

LIGHTS & SWITCHES - FIRE Panel ENG 1/2 TEST push buttons

* Pushed * CRC + MASTER WARN light * ENG FIRE ECAM * ENG FIRE push button light * SQUIB light * DISCH light * FIRE light on ENG Panel

LIGHTS & SWITCHES - FUEL Panel CTR TK PUMP 1/2 push buttons

* Pushed (dark) * Pump is operating if MODE SEL in MAN * Pump is operating if MODE SEL in AUTO as shown below * OFF * Not operating * FAULT light (amber) * Delivery pressure drops

LIGHTS & SWITCHES - FUEL Panel CTR TK XFR push buttons

* Pushed (dark) * Valve is automatically controlled. * Transfer valve opens if in MAN mode * OFF * Valve is closed. * FAULT light (amber) * The associated wing tank overflows

LIGHTS & SWITCHES - FUEL Panel LTK PUMPS 1/2 and RTK PUMPS 1/2 push buttons

* Pushed (dark) * Pump is on * For the older CEO aircraft: Only feeds when the center tank pump deilvery pressure drops below threshold. * OFF * Pump is off * FAULT light (amber) * Delivery pressure drops (low pressure)

LIGHTS & SWITCHES - FUEL Panel MODE SEL push button

* AUTO (dark) * OLDER CEO Aircraft: * Center Tank Pumps operate: * For 2 minutes after first engine start * Slats are retracted * 5 minutes after CTK TK low level is reached (550lbs) * Aircraft with Center XFR Valves: * Center tank XFR valve control is automatic. * Open when associated inner tank is not full. * Close automatically 5 minutes after CTK TK low level is reached * FAULT (amber) * Center Tank \> 550 lbs and * Left or Right Wing Tank \< 11000 lbs * MAN (white) * Manual mode selected allowing manual control of the center tank transfer valves or pumps

LIGHTS & SWITCHES - FUEL Panel X FEED push button

* OPEN (green) * Valve fully open * ON * Push button selected ON to open valve * OFF * Valve is closed

LIGHTS & SWITCHES - GPWS Panel FLAP MODE Push Button

"TOO LOW FLAPS" Mode inhibited

LIGHTS & SWITCHES - GPWS Panel G/S MODE Push Button

Off - Glide Slope Mode Inhibited

LIGHTS & SWITCHES - GPWS Panel LDG FLAP 3 Push Button

* LDG MEMO changed to display FLAPS 3 * Used when Landing Flaps will be 3 instead of FULL * Inhibits TOO LOW FLAPS

LIGHTS & SWITCHES - GPWS Panel SYS Push Button

* Fault Light - Modes 1-5 malfunction * OFF - Modes 1-5 of GPWS inhibited

LIGHTS & SWITCHES - GPWS Panel TERR Push Button

* Fault Light - * EGPWS Fault (Database) * Basic modes 1-5 still functional * OFF - Terrain function inhibited

LIGHTS & SWITCHES - Gravity GEAR EXTN Handle

* Pulled and turned clockwise * 1st turn isolates landing gear from Green Hyd system * 2nd turn opens the landing gear doors * 3rd turn released landing gear * Note gear doors remain open

LIGHTS & SWITCHES - HYD Panel Blue ELEC PUMP push button

* AUTO (dark) * Pump operates when electrical power availalbe and * In flight * On the ground after first engine start * On the ground with the BLUE PUMP OVRD pb ON * OFF light (white) * Pump de-energized * FAULT light (amber) * Reservoir Problem * Low Level * Fluid overheat * Low Air Pressure * Pump Problem * Low pump pressure (Inhibited on ground with engine off) * Overheat

LIGHTS & SWITCHES - HYD Panel ENG 1/2 PUMP push buttons

* ON (dark) * Pump runs if engine is running * OFF light (white) * Stops pump * Turns off FAULT light except for overheat * FAULT light (amber) * Reservoir Problem * Low Level * Fluid overheat * Low Air Pressure * Pump Problem * Low pump pressure (inhibited on ground with engine off)

LIGHTS & SWITCHES - HYD Panel PTU push button

* AUTO * Automatically runs when Green and Yellow differential pressure \>500 * Self test during second engine start * NOTE: PTU is inhibited: * For 40 sec after cargo door operation * ONLY one ENG master switch on AND tow pin in * ONLY one ENG master switch on AND parking brake set * OFF light (white) * Power transter stops * Turns off FAULT light except for overheat * FAULT light (amber) * Reservoir Problem * Low Level * Fluid overheat * Low Air Pressure

LIGHTS & SWITCHES - HYD Panel RAT MAN ON push button

* Pushed * Extends RAT and powers Blue system (2500psi) * switch powered by HOT BAT BUS

LIGHTS & SWITCHES - HYD Panel Yellow ELEC PUMP push button

* ON * Pump operates when electrical power available * OFF (dark) * Pump off * But pump will be turned on, regardless of switch, if Cargo Door Lever is moved to open/close * Turns off FAULT light except for overheat * FAULT light (amber) * Reservoir Problem * Low Level * Fluid overheat * Low Air Pressure * Pump Problem * Low pump pressure (Inhibited on ground with engine off) * Overheat

LIGHTS & SWITCHES - Landing Gear Indicator Panel AUTO/BRK push buttons

* LO * Most Aircraft: 1.7 m/s - 4 seconds after full ground spoiler deployment * Newer NEOs: 2 m/s - 2 seconds after ground spoiler deployment * MED * 3 m/s - 2 seconds after full ground spoiler deployment * MAX * Maximum pressure as soon as full ground spoiler deployment * DECEL light (green) * Deceleration is 80% of selected rate. * ON light (blue) * Armed

LIGHTS & SWITCHES - Landing Gear Indicator Panel LDG GEAR lights

* UNLK light (red) * Not locked in selected position (LGCIU 1) * Arrow (green) * Gear is down and locked (LGCIU 1)

LIGHTS & SWITCHES - Landing Gear Lever

* UP * Normal brake system applies main wheel brakes * Retracts gear * DOWN * Extends gear * Down Arrow (red) * In the landing configuration and landing gear not locked down * ECAM warning also appears

LIGHTS & SWITCHES - AUTOLAND WARNING LIGHTS

Illuminate when, below 200ft until touchdown: * Excessive ILS deviation (1/4 dot LOC, 1 dot G/S) * Loss or disconnect of both AP * ILS transmitter failure (Loss of signal) * RA disagree of more than 15ft * FMGS detects long flare, or untimely flare Immediate missed approach required. Vol II 6.30 pg 13

LIGHTS & SWITCHES - OXYGEN Panel CREW SUPPLY OFF Light

Closes valve (no oxygen to flight deck masks)

LIGHTS & SWITCHES - OXYGEN Panel MASK MAN ON Push Button

* Pushed * Mask Doors Open * AUTO * Mask Doors open when Cabin Altitude \>14,000'

LIGHTS & SWITCHES - OXYGEN Panel PASSENGER SYS ON Light

* Signal to open mask doors has been activated * Remains on until TMR RESET is pushed on MX Panel

LIGHTS & SWITCHES - PROBE/WINDOW HEAT Push Button

* AUTO * Probes and windows heated * In flight * On the ground when one engine running (except TAT probe) * ON light (blue) * Continuous heating of probes and windows

LIGHTS & SWITCHES - RAIN RPLNT Push Button

* Squirts a measured quantity of fluid on windshield. * Inhibited on the ground with engines not running.

LIGHTS & SWITCHES - RCDR Panel CVR ERASE Push Button

* Erases tape (2 hours) when: * Held for 2 seconds * On the ground * Parking brake on

LIGHTS & SWITCHES - RCDR Panel CVR TEST Push Button

* Activates test when: * CVR is powered * Parking Brake is on

LIGHTS & SWITCHES - RCDR Panel GND CTL Push Button

* ON light (blue) - CVR/DFR are temporarily/manually on * AUTO (dark) - Voice and Data recorders operate: * 5 minutes after initial power up * On the ground from 1st engine start to 5 minutes after 2nd engine shutdown * In flight

LIGHTS & SWITCHES - Side Stick Takeover push button

* Momentary push * Disconnects autopilot * Pushed and held * Establishes priority * Push and held for 40 seconds * Latches priority

LIGHTS & SWITCHES - SIGNS Panel EMER EXIT LT switch

* ON * Overhead EXIT signs and proximity marking system lights illuminate * ARM * Loss of AC1 bus illuminates only: * Overhead lights * Loss of DC ESS SHED bus illuminates * Overhead lights * Exit signs * Path lighting * OFF * Off NOTE: LIGHT EMER push button on pursers panel overrides cockpit switch.

LIGHTS & SWITCHES - Speed Brake Lever

* RET * Retracts speed brakes * Pull up from this position to arm GND SPLR * 1/2 * Extends speed brakes * Hard point at this position * FULL * Fully extends speed brakes * Full extension of gound spoilers will automatically occur when: * If armed: * both mains compressed and * both thrust levers at idle * If not armed * RTO above 72kts or * Both mains compressed and * reverse thrust is selected on at least one engine * Partial extension of ground spoilers (10 degrees) occurs automatically when: * Reverse is selected * only one main is compressed * Full retraction of ground spoilers automatically occurs when: * Disarmed * After landing * One TLA advanced \> 20 degrees

LIGHTS & SWITCHES - Triple Indicator

* ACCU PRESS * Pressure in Yellow Accumulator * Good for 7 parking brake applications * BRAKES * Yellow pressure being delivered to respective brake

LIGHTS & SWITCHES - VENTILATION Panel BLOWER and EXTRACT push buttons

* Both in AUTO * On the ground * Prior to takeoff power, typically OPEN configuration * After takeoff power, CLOSED configuration * May be in closed config prior to takeoff if skin temperature is too cold. * In Flight * Typically in the CLOSED configuration * May be in INTERMEDIATE configuration if the skin temperature is too hot. * One in OVRD * Closed configuration * Air conditioned air is added * Blower fan stops (If BLOWER in OVRD) * Both in OVRD * SMOKE configuration * Air conditioning air added * Blower fan stops, Extract fan runs * Intermediate flap opens

LIGHTS & SWITCHES - VENTILATION Panel BLOWER push button

* FAULT light (amber) * Air pressure low\* * Computer fault\* * Smoke * Overheat\* \*horn sounds if on the ground and no engines running * OVRD (white) * Goes to closed configuration (inlet and extract valves close) * Air conditioning air added * Blower fan stops

LIGHTS & SWITCHES - VENTILATION Panel EXTRACT push button

* FAULT light (amber) * Air pressure low\* * Computer fault * Smoke \*horn sounds if on the ground and no engine running * OVRD (white) * Goes to closed configuration (inlet and extract valves close) * Air conditioning air added