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Airbus Alaska 2023 All Questions > SH Chapter 9 - Flight Controls > Flashcards

SH Chapter 9 - Flight Controls Flashcards

1
Q

1) What does ELAC stand for?

A

Elevator Aileron Computer

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2
Q

2) How many ELACs are installed?

A

2

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3
Q

3) What are the functions of the ELAC?

A

Normal elevator and stabilizer and aileron control

  • Normal pitch and roll, Normal Law
  • Alternate pitch, Alternate Law
  • Direct pitch and roll
  • Abnormal attitude
  • Aileron droop
  • Acquisition of autopilot orders
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4
Q

4) Under Normal Law, what does ELAC 1 control?

A

Ailerons

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5
Q

5) Under Normal Law, what does ELAC 2 control?

A

Elevator and trimmable horizontal stab

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6
Q

6) What does SEC stand for?

A

Spoiler Elevator Computer

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7
Q

7) How many SECs are installed?

A

3

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8
Q

8) What functions are performed by the SECs?

A
  • Normal roll (by controlling spoilers)
  • Speed brakes and ground spoilers
  • Alternate pitch (SEC1 & SEC2 only)
  • Direct pitch (SEC1 & SEC2 only)
  • Direct roll
  • Alternate LAF
  • Abnormal attitude
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9
Q

9) Under Normal Law, what do the 3 SECs control?

A

Spoiler control and standby elevator and stabilizer control

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10
Q

10) What is the sole purpose of SEC 3 in Normal Law?

A

Spoiler control only (spoiler 1 & 2)

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11
Q

11) What is the definition of FAC?

A

Flight Augmentation Computer

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12
Q

12) How many FACs are installed?

A

2

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13
Q

13) What are the functions of the FACs?

A
  • Normal roll (coordinating turns and damping)
  • Rudder trim
  • Rudder travel limit
  • Alternate yaw
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14
Q

14) Is full rudder deflection available during all flight regimes?

A

No. Maximum rudder deflection decreases as speed increases

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15
Q

15) How are the flight control surfaces controlled and actuated?

A

Electronically controlled and hydraulically actuated

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16
Q

16) When is automatic pitch trim available?

A

In normal law (up to 33 bank turn)

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17
Q

17) How is roll control normally achieved?

A

Wingtip aileron and augmented by 4 spoilers per wing

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18
Q

18) If the Rudder Travel Limit system fails, is maximum rudder deflection available?

A

Freezes in current limit and full rudder authority returned with extension of slats

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19
Q

19) With only Green hydraulic system pressure available, will both the flaps and slats
operate?

A

Yes, but will operate at half speed.

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20
Q

20) What system prevents flap or slat asymmetry?

A

Wingtip brakes (WTBs)

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21
Q

21) What causes the WTBs to activate (ROAM)?

A

R - Runaway
O - Mechanism overspeed
A - Asymmetry
M - Uncommanded movement

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22
Q

22) If the WTB activates due to a flap asymmetry, can the slats still operate?

A

If flap WTB are on, can still operate the slats

If slat WTB are on, can still operate the flaps

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23
Q

23) How may Slat/Flap Control Computers (SFCC) are installed?

A

2

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24
Q

24) What would occur if one Slat/Flap Control Computers (SFCC) failed?

A

Slats and flaps operate at half speed

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25
Q

25) What flap/slat configurations correspond to position 1 on the FLAPS lever and how do they differ?

A

1 - Slats extend to 1, if over 100 kts

1+F - Flaps extend to 1 and slat extend to 1 if speed under 100kts

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26
Q

26) In what situation will the Flaps automatically retract?

A

At 210 kts, prior to Vfe

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27
Q

27) What is Alpha Lock?

A

Inhibits slat retraction at high AoA and low speeds

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28
Q

28) What is indicated when the FLAP legend appears in cyan on the upper ECAM display?

A

In transit

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29
Q

29) What happens to the ailerons when the flaps are extended?

A

Aileron Droop - Ailerons extend 5 degrees down

30
Q

30) Is there any landing configuration when speed brake extension is inhibited?

A

When flaps are Config 3 or Full

31
Q

31) When do the Ground Spoilers automatically extend?

A

Rejected Take Off
- Spoilers armed and speed above 72kts, as soon as thrust levers to idle
- Spoilers not armed and speed greater than 72 kts, as soon as one engine to reverse
Landing
- Spoilers armed - both main gear on ground and both thrust levers at idle or reverse selected on one lever and below MCT on the other
- Spoilers not armed - both main gear on ground and reverse selected on one engine and other lever below MCT

32
Q

32) At touchdown with reverse selected and only one landing gear strut compressed, will the ground spoilers extend?

A

Yes, but only partially (Phased lift dumpling)

33
Q

33) When will the ground spoilers automatically retract?

A
  • After landing
  • After RTO when ground spoilers disarmed
  • During touch and go when one thrust lever advanced above 20 degrees
34
Q

34) When is speedbrake extension inhibited (SAFET)?

A 
S - SEC 1 & 3 have faults
A - AoA protection active
F - Flaps full 
E - Elevator has fault
T - Thrust levers above MCT
35
Q

35) With spoilers not armed, will the spoilers deploy for an RTO?

A

Yes, as soon as one thrust lever to reverse and the other below MCT

36
Q

36) In flight, what happens if a spoiler fault is detected or electrical power is lost?

A

Automatically retract to zero

37
Q

37) What is the difference between the A320 and A321 regarding speed brake usage with the AP on?

A

Can only get half speed brakes with AP on in 320. Can get full in 321

38
Q

38) What protection/s do you have in Normal Law?

A

B - Bank (67 degrees)
Y - Yaw (RTL and coordination)
P - Pitch (30 degrees nose up and 15 degrees nose down)
A - AoA
L - Load factor (2.5 to -1 clean & 2 to 0 dirty)

39
Q

39) How does the High Speed Protection operate?

A

As speed increases above Vmo/Mmo, sidestick nosedown authority is reduced and permanent nose up order applied. On 321 the pitch trim freezes

40
Q

40) Can the pilot override the auto pitch-up associated with High Speed Protection in Normal Law?

A

No, but can hinder it

41
Q

41) What is Alpha Max?

A

Maximum AoA in normal law

42
Q

42) How does High AoA protection operate?

A

Activates when current AoA exceeds Alpha Prot

  • Maintains AoA equal to Alpha Prot without pilot input
  • Modifies normal law and side stick input becomes AoA demand rather than Load Factor
43
Q

43) What protection do you have in Alternate Law?

A

Load factor only

44
Q

44) Can you override the high speed stability in Alternate Law?

A

Yes

45
Q

45) What protections do you have in Direct Law?

A

None

46
Q

46) If you are in Pitch Alternate Law, what law would Roll be?

A

Roll direct law associated with yaw alternate or mechanical, depending on the failure

47
Q

47) When is there a direct relationship between sidestick and flight control surface deflection?

A

Ground mode of normal law (for flight control check)

48
Q

48) How would you get into Abnormal Attitude Law?

A

Basically double the normal law limits

  • Bank angle above 125 degrees
  • Pitch attitude above 50 degrees NU or 30 ND
  • Speed below 70-90 or above 440, or Mach above .91
  • AoA above 40 degrees
49
Q

49) What is the purpose of Abnormal Attitude Law?

A

Provide maximum efficiency to PF to recover to normal attitude

50
Q

50) After recovery from an unusual attitude, what law will you be in?

A

Pitch and yaw alternate and roll direct

51
Q

51) Will Abnormal Law revert to Direct Law on landing gear extension?

A

No

52
Q

52) What PFD indications indicate Normal Law?

A

“=“

53
Q

53) What is indicated if the PFD pitch and bank limits are amber Xs?

A

Alternate law

54
Q

54) What would cause you to revert to another law?

A

Multiple failures of redundant systems

55
Q

55) What law are you in when you perform the flight control check on the ground?

A

Normal law, ground mode

56
Q

56) Can the aircraft be flown with a loss of all flight control computers?

A

Yes, mechanical backup

57
Q

57) How is the aircraft controlled in Mechanical Backup?

A
  • Pitch is manual trim wheel
  • Lateral is rudder pedals
  • Speed is manual thrust levers
58
Q

58) How is the THS normally operated in flight?

A

ELAC2 sets the trim required automatically

59
Q

59) If NO hydraulic power is available can the THS be positioned?

A

No

60
Q

60) If a complete flight control computer failure occurs can the THS be positioned?

A

Yes, with trim wheel

61
Q

61) Can you move the PITCH trim wheel if all systems are working normally?

A

Yes, manual input always has priority over electrical control

62
Q

62) What happens to the THS when the aircraft enters into Ground Mode?

A

Auto reset to zero (after pitch attitude is less than 2.5 seconds for at least 5 seconds)

63
Q

63) What does the red arrow in the SIDE STICK PRIORITY light mean?

A

The pb the arrow is illuminated in front of is losing authority

64
Q

64) How would you regain control if you had just lost sidestick authority?

A

Pushing side stick takeover pb

65
Q

65) What do flashing green CAPT and F/O SIDESTICK PRIORITY lights indicate?

A

Both side sticks are being moved and neither has taken priority

66
Q

66) What happens when both pilots make an input simultaneously on the sidesticks?

A

Green CAPT and FO lights flash on SIDE STICK PRIORITY pbs and “DUAL INPUT” aural message

67
Q

67) What happens if you turn the Rudder Trim with the autopilot engaged?

A

Nothing. Knob not active.

68
Q

68) Does the rudder RESET button work with the autopilot engaged?

A

No

69
Q

69) When is the side stick position indication icon (white cross) displayed?

A

When on ground with at least one engine running

70
Q

70) Can the aircraft be flown with a loss of all hydraulic systems?

A

No

Airbus Alaska 2023 All Questions (18 decks)

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