The engine accessory gear box provides power for the:
Integrated Drive Generator (IDG) and a separate electric generator for FADEC.
Takeoff can be performed using which power settings?
FLEX/MCT and TO/GA.
When is T.O. INHIBIT and LDG INHIBIT active?
TO 1500 feet AGL, LND below 750 feet AGL.
How many thrust lever positions are there, and how are they labeled?
There are 6 thrust levers positions: TO/GA, FLX/MCT, CL, IDLE, REV IDLE and MREV.
You are just about to take off. You have not inserted a FLEX temperature. Can you still takeoff?
Yes, but only using the TO/GA detent.
During an engine start sequence, the gray background on N2 disappears at about 57%. What does this indicate?
That the start sequence has finished and all engine parameters have stabilized.
What does the FLEX represent in the FLX/MCT detent?
This is a reduced thrust setting used for takeoff.
How many FADEC's are installed in the aircraft?
Two, one per engine.
Automatic cranking is provided:
By the FADEC following an automatic start abort.
What is required for the FADEC to compute a reduced thrust setting?
A FLEX temperature must be entered on the TAKE OFF PERF page of the MCDU.
One of FADEC's functions is thrust reverser control.
Using manual thrust, the thrust lever position will determine the thrust setting for the engine.
True. They will operate like conventional throttles.
What is considered to be the active range of the A/THR system?
During single engine operations from just above the IDLE stop to the FLX/MCT detent.
During two engine operations from just above the IDLE stop to the CL detent.
If the thrust levers are set in the idle detent, is Alpha floor protection still available?
Yes Thrust lever position is disregarded.
Is there any mechanical linkage between the thrust levers and the engines?
No, it is totally electrical.
What is Alpha floor protection?
It helps prevent the aircraft from stalling and protects against windshear encounters during takeoff and approach.
Alpha floor protection is available:
From lift off and down to 100 feet radio altitude in the landing configuration.
How do you arm the A/THR in flight?
A/THR switch ON when throttles are not in the engagement mode.
What is the difference between variable thrust and the speed mode?
In the fixed thrust mode, thrust is fixed and the elevator controls the speed.
The FADEC system electrical power requirements are:
Aircraft power when IGN START is selected until approxiamtely 15% N2.
The left column, first line of the FMA is used to indicate:
The mode of the A/THR in use when A/THR is armed or active.
What are the two basic modes of the A/THR system?
Variable thrust and fixed speed.
Is any thrust lever action required if an engine failed at rotation while using FLEX takeoff power?
After takeoff, a change from FLX to MCT is achieved:
By setting the thrust levers to the TOGA or CLB detent and then back to FLX/MCT.
Can the engines be overboosted in the TOGA position?
No, because the ECU provides engine protection limit by monitoring N1, N2, and HMU fuel flow adjustments.
How can A/THR be ARMED automatically?
Whenever a takeoff or go-around is initiated with at least one flight director ON.
When Alpha floor protection is activated.
During a manual start, how is the start valve opened?
By depressing the ENG MAN START pushbutton's on the overhead panel while the ENG MODE selector is out of the NORM position.
If ENG START selector is set to NORM position before engine start, FADEC supply is cut off.
An engine master switch in the ON position (Engine Fire pushbutton in):
Sends a signal to open the LP fuel valve.
When does oil quantity indication begin to pulse?
Decreasing below 5 qts.
Does the FADEC provide EGT limit protection constantly?
No, EGT limit protection is only available during ground auto starts.
Auto Thrust System: When are the throttles in the engagement range?
Both throttles are above idle but not above the CLB detent when both engines are running.
A single throttle of an operating engine is above idle but not above the MCT detent when one engine is running.
The EEC transmits via the ERU to FADEC the data it uses for engine management.
The EIU transmits via the ERU to FADEC the data it uses for engine management.
The idle setting on the aircraft is capable of modulating due to certain conditions. During descent, what might cause the IDLE N1 setting to increase?
The slats are extended.
For a higher than normal bleed air demand or warmer than normal engine oil temp in flight.
Verification that Autothrust (A/THR) is active can be made by:
Only by looking at column five of the FMA.
When Alpha floor is activated, what power setting is automatically commanded and what FMA annunciation would appear in Column one?
TOGA / A. FLOOR
Holding the instinctive disconnect push button's for more than fifteen seconds will:
Disengage the A/THR (including Alpha Floor) for the remainder of the flight.
During the automatic start sequence of ENG 2, you notice that only igniter B is powered. Is it normal?
Yes, igniters are used alternately for engine start.
As far as FMA annunciations are concerned, what would indicate that the A/THR system is active?
'A/THR' changes from blue to white as shown in column five, line three.
If a thrust lever is set between two detents, the FADEC selects the rating limit corresponding to the higher limit.
True. This limit is displayed on the uppr ECAM.
The FADEC prevents the thrust from exceeding the limit for the thrust lever position in ______ mode.
What would happen during the takeoff roll if the thrust levers were set to the FLX/MCT detent without FLEX temperature being entered?
A LEVEL TWO warning would sound along with the appearance of an ECAM message.
What abnormals would cause the FADEC to automatically abort a start?
A hot start, an overtemp, a stalled start or no lightoff.
During an in-flight start or a manual start, will the FADEC auto abort for an abnormal?
Approach idle is:
A higher idle RPM than normal. It is selected when Flaps are 3 or FULL or when landing gear is down.
For reverser actuation, the left engine uses ____ hydraulic system pressure and the right engine uses _____ hydraulic system pressure.
Green - Yellow.
While flying the airplane with A/THR active, the speed knob is pulled and turned to a selected speed that happens to be slower than Alpha prot. What speed will the airplane slow to?
Where is the thrust reduction altitude found and is the number always the same?
TAKE OFF PERF page of the MCDU (it can be modified).
The blue circle above the N1 display:
Corresponds to thrust lever position.
Thrust reverser deployment requires:
The aircraft to be on the ground, associated pneumatic power available, TLA position confirmed by a PRIM.
During a manual start, what function does the FADEC perform?
Passive monitoring of the start sequence, to close the start valve and cut off the ignition on the ground.
During normal operation, in what detent are the thrust levers positioned once the thrust reduction altitude has been reached?
After take off the A/THR will not become active until:
The thrust levers are placed in the CLIMB position.
Continuous ignition is provided automatically when:
ENG ANTI ICE is selected ON and/or engine flameout is detected in flight and/or the EIU fails.
The engine primary parameters are permanently on the:
Upper ECAM E/WD
The FMU (Fuel Metering Unit) is controlled by the FADEC and performs which function(s)?
Overspeed protection for N1 and N2
Actuation of the HP shutoff valve to start or stop the engine.
Control of fuel flow to engine combustion chamber through the FMV (Fuel Metering Valve).
The air bleed system is used for:
Cooling the engine compartment, turbine, engine and IDG oil.
The FADEC system is powered by the aircraft electrical circuit:
Below 5% N2.
Is it possible to disconnect Alpha floor?
Yes, by depressing the autothrottle push button on the FCU.
The FADEC will automatically abort an abnormal start thereby providing engine limit protection, but will the FADEC also automatically dry crank the engine?
Yes, as long as the ENG MASTER switch remains in the ON position.
What would happen in flight if the FADEC's alternator failed?
The FADEC would now be powered using ship's power.
You are in the middle of a manual engine start. What are you looking for when you select ENG MASTER 2 ON?
The fuel used is reset, both igniters are powered and fuel flow is indicated.
Each FADEC is a dual channel (A&B) computer providing full engine management.
In addition to when the engine is operating, when else will the FADEC be powered?
For five minutes after electrical power is applied to the aircraft, when the FADEC GND PWR pb on the maintenance panel is depressed, or when the ENG MODE control switch is placed to IGN/START position.
During an automatic start, the FADEC controls:
The start valves, igniters, HP and LP fuel valves, and fuel flow.
If the instinctive disconnect pushbuttons on the thrust levers are depressed momentarily to disconnect autothrust:
Autothrust can be reengaged using the A/THR pushbutton on the FCU, Alpha Floor is available if required.
The accessory box is located behind the combustion chamber.
It is at the bottom of the fan case.
The thrust rating limit computed by FADEC is displayed on the upper ECAM. If a thrust lever is set between two detents:
FADEC will select the rating limit corresponding to the higher detent.
How is manual arming of the A/THR system accomplished?
By pressing the A/THR pb on the FCU confirm the pushbutton illuminates green or confirm an A/THR annunciation is displayed in column 5 of the FMA.
You are at the start of a descent and a blue N1 arc is displayed showing the new thrust demand. When does this happen?
Whenever there is power change with auto thrust engaged.
A few seconds after selecting reverse, the amber REV indication changes to green. What does this mean?
The reversers are now fully deployed.
Deployment of the thrust reverser system requires:
One FADEC channel operating with its associated thrust reverse signal.
Aircraft on ground signal from at least one LGCIU.
Throttle Lever Angle signal from the flight control primary computer 1 or 3.
During engine start the amber FAULT light on the ENG MASTER panel illuminates. This indicates:
A failure in the automatic start sequence.
Which steps of a manual start are being taken care of by the FADEC?
Starter valve closure and ignition cut off.
Can Alpha-floor be disengaged while in Alpha Protection?