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A320 > Flight Controls > Flashcards

Flight Controls Flashcards

1
Q

Unlike conventional aircraft, what are you commanding with the stick?

A

Roll rate in bank

G load in pitch (Load factor Demand)

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2
Q

How do you disconnect the autopilot with the sidestick?

A

Applying significant force to the stick will disconnect the autopilot, but using the disconnect button is better practice

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3
Q

How do you deactivate a side stick?

A

Press and hold the red button for command authority. Holding for 40 seconds will completely deactivate the opposite sidestick.

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4
Q

What are the actions done by the autopilot that is not represented on the rudder pedals?

A

turn coordination, rudder trim and yaw damping. All manual trim and other pilot inputs are felt through the pedals.

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5
Q

What are the Flat/Slat protections?

A

Surface asymmetry between left and right wing

Surface attachment failure

Uncommanded surface movement

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6
Q

What is S/F-Lock?

A

The Wing Tip Brakes are stopping the flaps/slats from moving to an uncommanded position.

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7
Q

What is A-LOCK?

A

A-LOCK prevents SLAT retraction at high AoA and low speeds

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8
Q

How many spoilers are there and why are they used?

A

10 total (5 per wing), they at as speed brakes(panels 2,3,4), roll spoilers and ground spoilers

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9
Q

What is different with the A320 when speed brakes are used while autopilot is on?

A

The A320 will only allow 1/2 deflection of speed brakes when autopilot is on.

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10
Q

What does it mean when the SPEED BRK message is amber?

A

Engine is above idle

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11
Q

When will the speed brakes auto retract?

A

Above MCT thrust

Flaps set to FULL (config 3 in A321)

High AoA

Flight Control Computer malfunctions

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12
Q

How do you arm the ground spoilers?

A

Pulling up on the speed brake lever until you see the GND SPLRS ARMED message and can see the white band around the base of the lever.

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13
Q

What happens to the ground spoilers during a rejected TO?

A

When ARMED:
72kts + IDLE = Spoilers Deployed

UnARMED:
72kts + reverse thrust = Spoilers Deloyed

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14
Q

Which control surfaces move in each Flap setting?

A

1+F (1 set on ground or retracting to 1 in flight)
Slats and Flaps Move position 1

1:
SLATS only to position 1

2:
FLAPS and SLATS position 2

3:
FLAPS only to position 3

FULL:
FLAPS and SLATS to FULL

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15
Q

After speed brakes are auto retracted due to TOGA power, how can you regain control of them?

A

Reduce power

Lever to retract

Wait 10 seconds

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16
Q

When will auto spoilers engage on landing?

A

Spoilers Armed:
Both Mains on Ground + Idle power

Spoilers not armed:
Both Mains on Ground + Reverse selected

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17
Q

When is partial spoiler deployment engaged?

A

Spoilers ARMED

Reverse (at least 1 engine)

One gear on ground

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18
Q

When will spoilers auto retract on landing?

A

Thrust above idle

Spoilers disarmed

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19
Q

What are the Flight Control Computers?

A

7 Total

3 ELAC (Elevator Aileron Computer)

2 SEC (Spoiler Elevator Computer)

2 FAC (Flight Augmentation Computer)

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20
Q

What do the ELACs control?

A

Elevator

Spoilers

THS (trimmable horizontal stabilizer)

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21
Q

What do the SEC control?

A

Spoilers

Backup Elevator Control

Backup THS (trimmable horizontal stabilizer)

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22
Q

What do the FAC control?

A

Rudder

Speed computations

Weight Calcs

Windshear warnings

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23
Q

In the event of complete electrical failure, what surfaces have a mechanical backup?

A

Rudder and THS (trimmable horizontal stabilizer)

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24
Q

How are the Slats/Flaps controlled?

A

2 Slat Flap Control Computers (SFCC)

Each SFCC has two channels which power their own hydraulic jack 4 jacks per slat/flap

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25
Q

What will happen to the Aileron max deflection with flaps down?

A

Aileron max deflection is reduced with flaps down

26
Q

During pre-flight, the Slat/Flap surfaces are not in the commanded position? What do you do?

A

DO NOT MOVE THE LEVER, contact mx

27
Q

In normal law, how is sidestick control different on the ground?

A

On the ground, the flight controls act like a conventional aircraft for rotation and control surface checks.

28
Q

When is Normal Law switching from Direct Mode to Load Factor and Roll Rate Demand mode?

A

5 seconds after TO

29
Q

When will the Flap automatically retract?

A

210 kts

NOTE: THE SLATS WILL NOT AUTO RETRACT

30
Q

What are you requesting when you move the sidestick to neutral position?

A

1 G load

31
Q

When does THS engage?

A

When you release the sidestick, the THS moves the Elevator to center the elevators in respect to the stabilizer

32
Q

Little no back stick is required up to what bank angle?

A

33 degrees bank

33
Q

What are the pitch protections?

A

Pitch (30/-15)

Maneuver

High Speed (Vmo / Mmo)

Angle of Attack

34
Q

What are the G loading protections?

A

+2.5 / -1.0 G

+2 / 0 G with Flaps or Slats

35
Q

What is are the Pitch (Attitude) protection limits?

A

+30 / -15 degrees Pitch

Config 0-3 at low speed
+25 / -15

Config FULL at low speed
+20 / -15

36
Q

What is the High Speed Protection?

A

The green “=” is the speed where protection is activated.

Nose down trim inhibited

Autopilot disengages

Limited acceleration even with pilot full down input

37
Q

What is the priority protection in Normal Law?

A

Angle of Attack protection.

Flight Control computers will override the pilot inputs to prevent a stall.

38
Q

What is Vls?

A

Minimum airspeed FDs will allow. IF autothrust is engaged, they will not allow the aircraft to reduce speed below VLS.

39
Q

What happens at Alpha Prot?

A

Nose up trim inhibited

Autopilot disengaged

Logic changes from Load Factor Commands to Angle of Attack Commands

40
Q

What happens at Alpha Max?

A

Computers will ignore back stick commands preventing a stall.

41
Q

When is alpha floor available?

A

After TO

Entire flight

Descent

Down to 100AGL in config 1 or greater

42
Q

What is Alpha Floor and when will it engage?

A

TOGA power automatically engaged when:

Excessive AoA

Windshear

Excessive nose up attitudes combine with specific sidestick inputs

43
Q

When encountering turbulence during a turn, will autoflight return to commanded bank angle?

A

NO, you only control roll rate not bank angle. You must counter any roll change from external factors.

44
Q

What is the max roll rate in Normal Law?

A

15 degrees / second

45
Q

Bank Angle Hold activates to what roll limit?

A

33 degrees

46
Q

What is Positive Spiral Stability?

A

During bank angles 33-67, releasing the sidestick will return to 33 degrees bank.

NOTE: beyond 33 degrees, you will require back pressure like a normal aircraft

47
Q

What is the bank angle limit?

A

67 degrees bank

48
Q

What computers are involved in turn coordination?

A

ELAC and FAC

49
Q

What flight control has a cable driven backup?

A

Rudder

50
Q

When is the landing memo displayed on the E/WD panel?

A

2000 AGL

51
Q

When does FLARE MODE activate?

A

50 AGL

52
Q

What happens at 30 AGL?

A

slight forward pressure to simulate a conventional aircraft landing

53
Q

What is the only protection offered in ALTERNATE LAW?

A

Maneuver (G loading)

High Speed and Alpha are replaced by high and low speed stabilities

54
Q

How is Speed stability (ALT LAW) different than Speed Protection?

A

Speed Stability attempts to pitch up (down) during overspeed however this can be overridden by the pilot.

Protection, ignores pilot inputs to prevent an overspeed or stall

55
Q

How are sidestick inputs different in ALT Law?

A

Pitch is the same Load Factor Demand as NORMAL

Roll is now DIRECT like a conventional aircraft.

Roll rate doubles to 30/sec

56
Q

What happens with Rudder Limits in ALT LAW?

A

They maintain last position before failure.

When Slats extend, max rudder deflection is available

57
Q

When would DIRECT LAW be active?

A

In ALT LAW with landing gear down.

This allows for full flare mode during touchdown.

58
Q

What is special about SEC 3?

A

It can only control spoilers and can not replace pitch functions of SEC 1&2.

59
Q

What is Abnormal Attitude Law and what protections are available?

A

When in an outside normal attitude caused by external forces.

Maneuver protection is all that remains.

60
Q

What are the modes of teh FC servos?

A

Active
Damping
Centering

Only one servo can be active at a given time.

61
Q

If both ELAC fails, how is roll now controlled?

A

Roll spoilers only

A320 (33 decks)

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