Switches / Functions Flashcards
ENG Mode Start switch IGN/START does what?
Initiates the automatic start or manual start sequences, when END Master lever is set to off, or initiate the ignitors in flight as required
ENG Mode Start switch CRANK position?
Initiates dry crank process of associated engine, When ENG MASTER lever and ENG MAN START is off. ON of the ENG Master lever and ENG MAN Start is a Maintenance function.
ENG Master lever does what?
- ON initiates the automatic start sequence or manual start sequence
- OFF The FADEC shuts down the associated engine or aborts start sequence
ENG 1(2) FIRE light does?
Fire detected in corresponding engine (see chapter 26 Fire protection)
ENG 1(2) FAULT light does?
Amber light comes on and caution appears on ECAM
- Reasons:
Position of the HP fuel shutoff valve is abnormal
Automatic start sequence associated engine aborts
There is a malfunction of the thrust control
Landing GEAR Lever does?
- Locks out lever on the ground
- Locks landing gear up in the air over 260 Knots, Under 260kt HYD remains cut off as long as Lever is up.
- Operaties of the GREEN Hyd system
- Controlled by LGCIU 1 or 2, switches automatically each time lever actuated
LGCIU Receives position information from?
Landing gear, cargo doors, and landing flaps system
LGCIU receives gear position from proximity detectors when?
- Landing gears are locked down or up
- Shock absorbers are compressed or extended
- Landing gear doors are open or closed
- The Bogie are aligned or not
Sensors send to the LGCIU position for the following?
- Manual selector valves
- Locking shaft
- Locking handle
- Safety shaft
- Door sills (if installed)
LGCIU detect electrical failures only in certain proximity switches in cargo system which are?
- Locking shaft
- Locking handle
- Safety shaft
When detected indicates the NON LOCKED condition
RED ARROW next to landing gear lever indicates?
- Landing gear is not locked down when aircraft is in the landing configuration and ECAM “GEAR NOT DOWN”
- RA altitude less than 750ft and both engines N1 below 75%
- RA altitude less than 750ft and FLAPS 3 or FULL
- FLAPS 3 or FULL selected with both radio altimeters failed
Wipers speed?
- 230 knots
- Make sure off on preliminary flow before power established
Batteries 1(2) Voltage needs to show?
- At least 25.5 before turning on. If on or below charge with ground power for 20 minutes.
- APU start after 30 minutes
Battery pb does what?
Controls the operation of the corresponding battery charging limiter. (BCL)
Battery charging limiter (BCL) controls?
Controls automatic connection and disconnection of the corresponding battery to the DC BAT BUS (3PP) by closing battery line contactor
When are the Batteries connected to the DC BAT BUS?
- APU starting MASTER pb switch ON and N 95%
NOTE: connection limited to 3 min when EMERG GEN on - Battery voltage below 26.5 volts charging, charging ends when current goes below 4 amperes, On ground immediately, Inflight after a time delay of 30 min
- Loss of AC BUS 1 and 2 when below 100 knots EMGER GEN not supplying
If AC BUS 1 & 2 are not energized and no emergency gen what do the batteries supply power to?
- Batt 1 supplies the AC STAT INV BUS and if speed greater than 50knots the AC ESS BUS
- Batt 2 supplies the DC ESS BUS
What is the battery logic?
Automatic cut off logic prevents the batteries from discharging.
- On the Ground
- BAT pb switches are AUTO
- Main power EXT PWR + GEN is off
- Battery voltage is low
How can the flight crew rest contractors?
By switching the BATT pb switch to OFF then AUTO
When Bat 1 (2) pb is off?
Battery charge limiter is not operating, battery line contractor is open
Bat 1 (2) FAULT light indicates?
Comes on amber with a ECAM caution when the charging current for the corresponding battery is outside limits, battery contractor opens.
APU Fire test pb does what?
- A continuse repetitive chime sounds
- MASTER WARNING light flashes, APU fire waning appears on ECAM
- APU FIRE pb lights up red
- Squib light comes on white
- Discharge light comes on Amber
What would you not see if ONLY on BAT power when testing APU?
You would not get the APU page to check oil quality.
Is testing the APU on BAT power a successful test?
Yes, due to the auto shut down feature of the APU on the ground.
What controls the APU?
The electronic control box (ECB) Which is a full authority digital electronic controller that performs the bulk of the APU system logic for all modes of engine operation
- Sequences the start and monitors
- Monitors bleed air
- Sequences the shutdown
- Controls the automatic shutdown
What does the APU fire pb do?
- Shuts down APU
- Silence the oral warning
- Arms the squib
- Closes LP fuel valve
- Shuts off the APU fuel pump
- Closes the APU Bleed valve and cross feed valve
- Deactivates the APU Generator
Where does the APU get its fuel?
On older aircraft fuel systems, fuel comes from the left wing tank.
- When engine pumps are not operating APU has its own electric pump. When ENG pumps are turned on electric pump turns off.
New fuel system pumps is attached to the line and not in the tank.
When is power available on APU start.
At 95% N and 2 seconds and at 99% N and the AVAIL in green comes on the START switch.
Can the APU run on the ground without crew supervision?
Yes, do to the automatic shut down feature of the APU
In case of a APU fire what will happen?
- APU fire warning operate in the cockpit
- A horn in the nose gear bay sounds
- The AVAIL light goes out
- The FAULT light in the MASTER SW lights up
- The APU shuts down
- The APU fire extinguisher discharges
APU MASTER SW pb does what?
Controls the electric power supply for the operation of the APU and its protective features, controls the starting and shutdown sequences
ON position for the APU Master does what?
- ON blue light comes on
- Electric power goes to the APU system, The ECB performs a power-up test
- The APU fuel isolation valve opens
- If no fuel tank pump is running, the fuel pump operates
- If the aircraft has ground power or main generator power, the APU page appears on the ECAM display
OFF position of the APU Master does what?
- Manual shutdown sequence
- The ON light on the MASTER SW pushbutton switch and the AVAIL light on the START pb go out
- If the aircraft was using APU bleed air, The APU keeps running for a cooling period of 60 to 120 seconds
- At 7% the air inlet flap closes
FAULT LT on APU MASTER switch means?
- Amber light illuminates along with and ECAM message when automatic APU shutdown occurs. Happens in the event of:
- Fire (on the ground)
- Air inlet flap closes
- Overspeed
- No acceleration
- No speed
- EGT over temp
- No flame
- Underspeed
- Reverse flow
- Low oil pressure
- High oil temperature
- DC power lost
- ECB failure
- Loss of overspeed protection
- Oil system shutdown
- Inlet oversheat
- Clogged oil filter
- Loss of EGT thermocouples
What lights come in EMERG power
- FO dome light, CAPT flood light, Standby Compass
Parking brake works off which HYD system?
- Yellow system
Why do you set the parking brake before walk around?
- To check the wear pins and for the captain to do his CVR test.
How man application of the parking brake on accumulator pressure do you have?
approx 7 applications
How long will the parking brake hold pressure for on?
12 hours
What setting could the flaps be set at before walk around?
- Hot weather conditions above 40 degrees C flaps could be config 1, for cooling around bleed ducts and wing
- Cold weather you may leave them down until engine shut down to get off contaminates.
Speed brakes controlled by what and which panels are used?
- Controlled by the SECs
- Speedbrakes are actually spoilers 2,3, and 4
When will speed brakes extension is inhibited?
- SEC1 and SEC3 both have faults
- An elevator (L or R) has fault
- Angle of Attack protection is active
- Flaps are in configuration FULL
- Thrust levers above MCT position
- Alpha floor activation
The maximum speed brake deflection in manual flights?
40 degrees for spoilers 3 and 4
20 degrees for spoilers 2
The maximum speed brake deflection with the autopilot engaged is?
25 degrees for spoilers 3 and 4
12.5 for spoilers 2
On A320 when do you have full speed brakes and half?
Full speed brakes when AUTO PILOT is off, only half speed brakes with AUTO PILOT on.
On A321 when do you NOT have full speed brakes?
Config 3 or FULL
On A320 when do you NOT have full speed brakes?
Config FULL
When are speed brakes armed?
For takeoff and Landing
With ground spoilers armed when will they automatically deploy?
Speed exceeds 72 knots with bother thrust levers at idle
With ground spoilers NOT armed when will they deploy?
Speed exceeds 72 knots and 1 reverser is selected on (other thrust lever remains at idle)
Prob/window heat when is it powered?
- Comes on automatically when at least 1 engine is running, or aircraft is in flight
- Manual when crew switches it ON by the pb
What setting does the windshield operate on the ground and inflight?
It operates at low power in the ground, normal inflight
What does the Probe/window heat pb do in Auto?
- Probe window are heated automatically inflight or on the ground 1 engine running except TAT probes (TAT in the air)
In the ON position Probe/Window heat?
Probes and Windows are heat permanently
Probes heated are?
Pitot heads
Static ports
Angle of attack probes (AOA)
Total air temperature (TAT) probes
Three independent Probe Heat Computer (PHCs) automatically control and monitor?
- Captain probes
- F/O Probes
- STBY probes
APU Bleed pb ON does what?
Opens the APU bleed valve provided N Speed is greater than 95% and there is no leak on APU or the left side bleed.
APU Bleed FAULT light indicates what?
Illuminates amber to indicate an APU leak is detected
What would the x bleed do in the AUTO setting?
Crossbleed valve opens when the system is using APU Bleed air and it closes if the system detected a leak expect during engine start.
X bleed valve is controlled by what?
BMC 1 & 2
What does BMCs do?
Detect bleed air wing leak
Pylon bleed air leaks
APU bleed air leak
IDG FAULT light indicates?
Low oil pressure
High oil temperature (185c)
ECAM message
FAULT light extinguishes when IDG disconnected
When disconnecting IDG not exceed how long pb press/
3 seconds can damage disconnecting mechanism
GEN 1(2) FAULT light indicates?
Amber when the GCU Generator Control Unit trips, or the line contractor opens without selecting the GEN2 pb to OFF
GEN 1(2) pb OFF
The generator field is de-energized and the line contractor opens, fault circuit is also reset
AC ESS FEED pb FAULT light indicates?
Amber when the AC ESS BUS is no powered and the ECAM caution message appears
NOTE: Total loss of the main GEN the AC ESS BUS is automatically supplied by the emergency GEN (or by the static inverter) if the emergency generator is not available.
ALTN light on the AC ESS FEED pb indicates?
When the AC ESS FEED pb is selected to ALTN, manually sleets position. The AC ESS BUS is supplied by AC BUS 2
What does the AC ESS FEED pb do?
Allows the AC ESS BUS to be powered from AC BUS 2, instead of AC BUS 1
BUS TIE pb does what?
- Open and close automatically to maintain power supply to both AC BUS 1 and AB BUS 2
- One contactor closed when engine driven gen supplies the associated AC BUS and the APU GEN or external power supplies the other side
- Both contactors close during single ENG operation or operation of the APU GEN or external power
OFF of the BUS TIE pb what happens?
- Each ENG GEN supplies its associated side of the electrical system
- External power and the APU GEN are prevented from supplying electrical power
APU FAULT light indicates?
Amber, ECAM caution message appears, trip is initiated by the GCU or line contactor opens without selecting the APU GEN pb to OFF
GALLEY pb does what?
It is MAIN GALLEY and secondary galley power supply
When does Main GALLEY power shed?
- In flight when only one GEN is operating
- On the ground when only one engine GEN is operating
GALLEY FAULT light indicates?
Amber with associated ECAM caution appears, when GEN load is above 100% of its rated output
What is what is the power priority?
ENG GEN External power APU RAT Batteries
What does each GEN produce for power?
90 KVA
400 HZ
3 Phase
115/200V
How man TRUs, max amps?
2Q
200 AMPS
RAT produces how much power
5 KVA
Normal capacity of the batteries is?
23 ampere-hour
How man types of circuit brakers?
3 types
- Black not monitored
- Green monitored
- Green/Red not touch
What does the RAT power?
AC ESS
AC ESS SHED
DC ESS
DC ESS SHED
APU starting when on EMERG GEN powering is limited to?
3 minutes
EXT PWR Avail light indicates?
External power is plugged in and external power parameters are normal
Does the APU GEN have priority over external power?
No, external power overrides APU GEN, but ENG GEN over rides EXT Power
Commercial pb does what in the ON position?
Commercial electrical loads are supplied to:
Cabin and cargo light
Water and toilet system
Drain mast ice protection
Galley
Passengers entertainment
Semi-automatic cargo loading (if installed)
EMER ELEC PWR GEN 1 line pb does what?
GEN 1 line contactor opens and AC BUS 1 channel is supplied from GEN 2 through bus tie contactors This is used for the smoked drill.
GEN 1 LINE Smoke would power?
Would only have a fuel pump in each fuel tank.
Crew Supply 02 pb does what?
Controls valve open or closed to supply 02 to crew masks.
02 pack system to auto does what?
Drops the masks in the back when cabin reaches 14,000 or hight
How long is do packs have 02 for?
15 min
Engine oil quantity for CEO?
min 11 quarts 0.3 pr hr consumption
Engine oil Quantity for NEO?
min 14 quarts / OAT -30 16.5 quarts
To do a CVR test you must?
Have the parking brake on and the GND CTL on position
When will the CVR work automatically?
Turns on when aircraft AC power is established and after first ENG is stated and shuts off 5 minutes after engine shut down.
TERR pb does what?
It gives oral warnings when approaching terrain.
It uses the data base in order to predict
What does Mode 1 of the GPWS do?
- Gives excessive rate of decent
What does Mode 2 of the GPWS do?
- Excessive terrain closure rate
What does Mode 3 of the GPWS do?
- Altitude loss after takeoff
What does Mode 4 of the GPWS do?
- Unsafe terrain clearance when not in landing configuration
What does Mode 5 of the GPWS do?
- Decent below G/S
When do you do a FULL alignment of the ADIRSs?
- When sectors are off
- First flight of the day
- Change of flight crew
- If the GPS is not available
- If flight crew expects long segments and poor coverage
- If the deviation of the IRS position from the FMGC is greater than 5 miles
When do you do a quick alignment of the ADIRSs?
- When a through flight
Why do you wait 5 second for the BAT light on ADIRSs?
Make sure they it will revert to BAT power
What does the IR postion of the ADIRS do?
- Ground speed
- Aircraft position
- Flight path vector
- Heading
- Attitude
- Acceleration
- Track
What does the ADR portion of the ADIRS do?
- Baro
- Overspeed warning
- Angle of attack
- Temperature
- Speed/Mach
Steady FAULT light on IR mean?
The respect IR is lost
Flashing FAULT light on IR mean?
You could recover only Altitude and Heading with ATT switch position.
ADR FAULT amber light indicates?
Fault in the air data reference
Off position of the ADR pb is?
Air Data is disconnected
When will ALIGN light flash on the ground?
- PPOS not entered within 10 min of alignment or 3 minutes of fast alignment
- Large difference in LAT/Long between shutdown position and entered position
- Aircraft movement
- 1 min left in alignment process
What does IR display your VSI as?
True read VSI
If ADR provides backup VSI what would happen?
VSI would revert to traditional VSI
How does the FMS determine aircraft position (4 sources)
- ADIRS calculates hybrid of the GPS and IRS psoition
- IRS
- Radio Navigation
- Internal NAV database
FMS determine radio position using which two methods?
DME/DME preferred
VOR/DME
When does Mixed IRS position match actual aircraft position?
Runway threshold FMS calculates position when thrust levers are moved to TOGA or FLEX
What are ELCS and how many installed?
Elevator Aileron Computers, 2 installed
What are SEC and how many installed?
Spoiler Elevator Computers, 3 installed
What are FACs and how many installed?
Flight Augmentation computers 2 installed
ELACs functions are?
- Normal elevator
- Normal aileron
- Normal pitch and roll
- Alternate pitch
- Direct pitch and roll
- Abnormal attitude
- Aileron droop
- Autopilot orders
SECs functions are?
- Normal roll
- Speed brakes
- Alternate pitch
- Direct pitch
- Direct roll
- Abnormal attitude
SEC 3
Spoilers control 1 for flight and 1 for ground
FACs functions are?
- Rudder trim
- Rudder travel limiting
- Yaw control (damping, turn coordination)
- Flight envelope protection vertical
- Windshear protection
- Low Energy warning protection
- ALPHA floor protection
- PFD speed scale (airspeed protection computation)
ELACs control?
Elevator, Aileron, Trimmable THS
SECs control?
Spoilers, Backup elevator, backup THS
SEC 1+2 provide backup elevator + THS
FACs control?
Rudder, Provide characteristic speed, Aircraft weight calculations, Winshear warnings, Several other functions
Normal Law protections are?
- High Speed
- High angle of attack (ALPHA protection AOA)
- Load factor 2.5/-1.0, 2.0/0.0
- Pitch Attitude 30up/15down
- Bank angle 67
Alternate Law protections are?
- Load factor
- Hight speed stability
- Low speed stability
Direct Law protections are?
None
Mechanical Law has?
Only rudder and manual trim, thrust for direction
Abnormal Attitude Law is what?
- Bank angle above 125 degrees
- Pitch attitude 50 degrees nose up and down 30 degrees nose down
- Speed below 60-90 knots
What law do you go into when leaving Abnormal Attitude Law?
- When the aircraft returns within the normal flight envelop.
- Pitch Alternate law is active
- Roll Direct Law is active
- Yaw Alternate Law is active
What happens at ALPHA prot?
- AOA is commanded instead load factor
- Speed brake retracted
- Autopilot disengages
- Pitch trim up is inhibited
When do wing tip brakes engage to lock the slats/flaps (4 red collared circuit brakers)?
- Runaway
- Overspeed
- Asymmetry
- Movement un-commanded
When are spoilers inhibited?
- SEC 1 and SEC 3 failure
- ALPHA prot or ALPHA floor
- Flaps in configuration FULL (configuration 3 for A321)
- Failure of one Elevator
- TOGA on thrust levers
What happens at ALPHA Prot?
- Nose up trim is inhibited
- The autopilot if engaged disengaged
- Pitch command change from load factor to angle of attack
(can be override by pilot)
ALPHA Max speed is generated by what?
By the FACs
What is actual angles of attack Alpha Prot and Alpha Max?
Computed by the ELACs based of AOA not airspeed.
What is Alpha floor A.FLOOR?
Is a function of the autothrust system and only available in normal. Provides TOGA thrust automatically regardless of thrust lever position. Alpha Floor is available from lift off to 100ft RA with the aircraft in landing configuration.
