2025 05 ACTS: Flight Controls

Question 1

Flight Control Panel:
What does ELAC stand for?
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Answer 1

Elevator Aileron Computer

Question 2

Flight Control Panel:
How many ELACs are installed?
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Answer 2

2

Question 3

Flight Control Panel:
What are the functions of the ELAC?
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Answer 3

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

Question 4

Flight Control Panel:
Under Normal Law, what does ELAC 1 control?
QRH OPS.07A

Answer 4

º Primary – Aileron control (roll)
º Standby – Elevator / Trimmable Horizontal Stabilizer control (backs up ELAC 2)

Question 5

Flight Control Panel:
Under Normal Law, what does ELAC 2 control?
QRH OPS.07A

Answer 5

º Primary – Elevator / Stabilizer (pitch)
º Standby – Aileron control (backs up ELAC 1)

Question 6

Flight Control Panel:
What does SEC stand for?
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Answer 6

Spoiler Elevator Computer

Question 7

Flight Control Panel:
How many SECs are installed?
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Answer 7

3

Question 8

Flight Control Panel:
What functions are performed by the SECs? (SAD DAN)
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Answer 8

º Speed brakes and ground spoilers (SEC 1 & 3 only)
º Alternate pitch (SEC 1 & 2 only)
º Direct pitch (SEC 1 & 2)
º Direct roll
º Abnormal attitude
º Normal roll (by controlling the spoilers)

Question 9

Flight Control Panel:
Under Normal Law, what do the 3 SECs control?
QRH OPS.07A

Answer 9

º Primary – Spoiler control (roll)
º Standby – Elevator / Stabilizer control (SEC 1 & 2 back up the ELACs)

Question 10

Flight Control Panel:
What is the sole purpose of SEC 3 in Normal Law?
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Answer 10

Spoiler control (Spoilers 1 & 2 only)

Question 11

Flight Control Panel:
What is the definition of FAC?
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Answer 11

Flight Augmentation Computer

Question 12

Flight Control Panel:
How many FACs are installed?
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Answer 12

2

Question 13

Flight Control Panel:
What are the functions of the FACs?
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Answer 13

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

Question 14

Flight Control Panel:
Under Normal Law, what do the FACs provide (YAWL)?
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Answer 14

º Y – Yaw Control – Damping and turn coordination, rudder limiter, rudder trim
º A – Airspeed Protection Computation (Alpha Protection, high / low limits, maneuvering speed, PFD
speed scale)
º W – Windshear protection (Reactive and not Predictive)
º L – Low Energy Warning Protection (“SPEED, SPEED, SPEED”)

Question 15

Flight Control Panel:
Is full rudder deflection available during all flight regimes?
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Answer 15

No. Rudder deflection is limited as a function of airspeed

Question 16

Flight Control Panel:
How are the flight control surfaces controlled and actuated?
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Answer 16

All surfaces are controlled electrically and actuated hydraulically

Question 17

Flight Control Panel:
When is automatic pitch trim available?
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Answer 17

In flight under Normal Law with bank angle less than 33° with or without autopilot engaged

Question 18

Flight Control Panel:
How is roll control normally achieved?
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Answer 18

1 aileron and 4 spoilers on each wing

Question 19

Flight Control Panel:
If both FACs fail, is maximum rudder deflection available?
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Answer 19

Yes, after slat extension

Question 20

Trimmable Horizontal Stabilizer:
How is the THS normally operated in flight?
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Answer 20

The flight control computers control trim functions automatically

Question 21

Trimmable Horizontal Stabilizer:
If NO hydraulic power is available can the THS be positioned?
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Answer 21

No – the THS requires hydraulic power from the Green or Yellow systems

Question 22

Trimmable Horizontal Stabilizer:
If a complete flight control computer failure occurs can the THS be positioned?
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Answer 22

Yes, mechanical trimming is possible by manually positioning the Pitch Trim Wheel

Question 23

Trimmable Horizontal Stabilizer:
Can you move the PITCH trim wheel if all systems are working normally?
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Answer 23

Manual inputs have priority over computer inputs. The autopilot will disconnect.

Question 24

Trimmable Horizontal Stabilizer:
What happens to the THS when the aircraft enters into Ground Mode?
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Answer 24

The trim automatically resets to zero (inside the green band)

Question 25

Glareshield / FCU: What does the red arrow in the SIDE STICK PRIORITY light mean? FCOM-DSC-27-20-30

Answer 25

It illuminates in front of the pilot losing authority

Question 26

Glareshield / FCU: How would you regain control if you had just lost sidestick authority? FCOM-DSC-27-20-30

Answer 26

The last pilot to press the pushbutton on the sidestick will have authority. An aural “Priority Left” or “Priority Right” will sound

Question 27

Glareshield / FCU: What do flashing green CAPT and F/O SIDESTICK PRIORITY lights indicate? FCOM-DSC-27-20-30

Answer 27

-Both sidesticks have been moved simultaneously and neither pilot has taken priority -when the flight crew has taken priority by pressing the takeover pushbutton but the other sidestick is not at neutral.

Question 28

Glareshield / FCU: What happens when both pilots make an input simultaneously on the sidesticks? FCOM-DSC-27-20-30

Answer 28

º The inputs are algebraically summed up to the normal limits º An aural “Dual Input” will sound º Green CAPT and F/O lights will illuminate

Question 29

Flaps and Slats: With only Green hydraulic system pressure available, will both the flaps and slats operate? FCOM-DSC-27-30-10

Answer 29

Yes, at a slower speed

Question 30

Flaps and Slats: What system prevents flap or slat asymmetry? FCOM-DSC-27-30-10

Answer 30

Wing Tip Brakes (WTB)

Question 31

Flaps and Slats: What causes the WTBs to activate (ROAM)? FCOM-DSC-27-30-10

Answer 31

º Runaway (Move handle to 1, all go to 3) º Overspeed (Flap jack screw breaks) º Asymmetry (Both on one side move farther) º Movement (Never touch handle, ALL just move)

Question 32

Flaps and Slats: If the WTB activates due to a flap asymmetry can the slats still operate? FCOM-DSC-27-30-10

Answer 32

Yes, only flap operation is inhibited

Question 33

Flaps and Slats: How may Slat/Flap Control Computers (SFCC) are installed? FCOM-DSC-27-30-10

Answer 33

2

Question 34

Flaps and Slats: What would occur if one SFCC failed? FCOM-DSC-27-30-10

Answer 34

The slats and flaps would continue to operate, but at half speed

Question 35

Flaps and Slats: What flap/slat configurations correspond to position 1 on the FLAPS lever and how do they differ? FCOM-DSC-27-30-20

Answer 35

º CONF 1+F is used for takeoff and provides both slats (position 1) + flaps º CONF 1 is used in-flight and is slats only

Question 36

Flaps and Slats: When will the Automatic Retraction System (ARS) operate? FCOM-DSC-27-30-10

Answer 36

During acceleration in CONF 1+F the FLAPS (not slats) will automatically retract to 0 at 210 knots

Question 37

Flaps and Slats: What is Alpha Lock? FCOM-DSC-27-30-10

Answer 37

This function inhibits retracting slats from 1 to 0 at a high angle of attack or low airspeed

Question 38

Flaps and Slats: When the FLAP legend appears in blue on the upper ECAM display what is indicated? FCOM-DSC-27-30-20

Answer 38

Flaps/slats in transit

Question 39

Flaps and Slats: What happens to the ailerons when the flaps are extended? FCOM-DSC-20-10-20

Answer 39

The ailerons droop 5°

Question 40

Spoilers / Speedbrakes: Is there any landing configuration when speed brake extension is inhibited? FCOM-DSC-27-10-20

Answer 40

Flaps FULL

Question 41

Spoilers / Speedbrakes: When do the Ground Spoilers automatically extend during a rejected takeoff? FCOM-DSC-27-10-20

Answer 41

-If the ground spoilers are armed and the wheel speed exceeds 72kt, the ground spoilers will automatically exend as soon as both thrust levers are reset to idle. -if the ground spoilers are not armed and the wheel speed exceeds 72kt, the ground spoilers will automatically extend as soon as reverse is selected on one engine (the other thrust lever remains at idle)

Question 42

Spoilers / Speedbrakes: At touchdown with reverse selected and only one landing gear strut compressed, will the ground spoilers extend? FCOM-DSC-27-10-20

Answer 42

Partially – Full extension is limited until both main gear struts are compressed

Question 43

Spoilers / Speedbrakes: When will the ground spoilers automatically retract? FCOM-DSC-27-10-20

Answer 43

-After landing, when the ground spoilers are disarmed. -after a rejected takeoff, when the ground spoilers are disarmed. -during a touch and go, when at least one thrust lever is advanced above 20 degrees.

Question 44

Spoilers / Speedbrakes: In flight, what happens if a spoiler fault is detected or electrical power is lost? FCOM-DSC-27-10-20

Answer 44

The spoiler automatically retracts

Question 45

Spoilers / Speedbrakes: When is speedbrake extension inhibited (SAFET)? FCOM-DSC-27-10-20

Answer 45

º SEC 1 and 3 have failed º AOA protection is active º Flaps FULL º Elevator (L or R) fault (only spoilers 3 and 4 are inhibited) º Thrust levers above the MCT position

Question 46

Spoilers / Speedbrakes: What is the difference between the A319 and A320 regarding speed brake usage with the AP on? FCOM-DSC-27-10-20

Answer 46

With the A319 you get full spoiler deflection and with the A320 you only get partial spoiler deflection

Question 47

Aft Pedestal Misc: What happens if you turn the Rudder Trim with the autopilot engaged? FCOM-DSC-27-10-20

Answer 47

Nothing

Question 48

Aft Pedestal Misc: Does the rudder RESET button work with the autopilot engaged? FCOM-DSC-27-10-20

Answer 48

No

Question 49

Flaps & Slats: What happens to the ailerons when the flaps are extended?

Answer 49

the ailerons droop 5 degrees

Question 50

Spoilers / speedbrakes: When do the ground spoilers automatically extend during the landing phase?

Answer 50

-Speed brake levere not in the retracted position or ground spoilers armed and... -both main landing gears on ground. -both thrust levers at or below idle position, or reverse selected on at least one engine (and the other thrust lever below MCT position). -Speed brake lever in the retracted position but ground spoilers not armed and... -both main landing gears on ground, -reverse selected on at least one engine (and the other thrust lever below MCT position).

Question 51

Spoilers / speedbrakes: When do the ground spoilers partially extend?

Answer 51

-To accelerate the full spoiler extensiion, the Phased Lift Dumping (PLD) function allows the ground spoilers to deploy with a reduced deflection when the following conditions are met: -Speed brake lever not in the retracted pisition or ground spoilers armed and: -one main landing gear on the ground, -reverse selected on at least one engine (and the other thrust lever below MCT position).