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