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A330/350 Systems > A330 Flight Controls > Flashcards

A330 Flight Controls Flashcards

1
Q

Which spoilers are also used for roll control?

A
  • Spoilers 2 to 6
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2
Q

What is MLA and what does it do?

When is it active?

A
  • Manoeuvre Load Alleviation
  • Redistributes loads over the wing to avoid wing bending
  • Above 250kts, normal and alternate law, flaps zero
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3
Q

What happens when the maximum deflection of one of the spoilers has occurred during roll control and speedbrake use?

A
  • The opposite side spoiler will retract until the roll control demand has been achieved
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4
Q

What does BYDU stand for and what does it do?

A
  • Backup Yaw Damper Unit
  • Activated when total loss of electrical power or
  • total loss of all computers
  • It provides yaw damping function
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5
Q

When does the high AoA protection activate?

What does it do?

A
  • When the AoA becomes greater than AlphaPROT
  • It maintains AlphaPROT (no backstick) or
  • It maintains AlphaMAX (full backstick)
  • Stops trimming nose up
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6
Q

What happens when the AlphaFLOOR protection kicks in?

A
  • The auto-thrust sets go around thrust

- Aircraft may start a gentle climb

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7
Q

By how much does the FLRS retract the flaps?

A
  • Just one stage (Flap FULL to 3, 3 to 2, 2 to 1)
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8
Q

If one spoiler on the wing fails on one side, what happens?

A
  • The other symmetric spoiler is inhibited

- Except spoiler 4 and 6

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9
Q

On landing, when do the spoilers deflect if they have been armed? And if they have not been armed?

A
  • As soon as main wheels touch down with thrust levers at idle
  • As soon as reverse is selected on one engine with main wheels touched down and the other reverser selected to idle
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10
Q

How do you know when the aircraft is in mechanical backup law?

A
  • Amber ‘x’ appears instead of green protection symbols (pitch and AoB)
  • No AlphaPROT indication (amber/black stripes)
  • ‘MAN PITCH TRIM ONLY’ (red) message appears on PFD
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11
Q

When does the high speed protection deactivate?

A

When the aircraft slow to below Vmo/Mmo

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12
Q

Which two control surfaces have a mechanical link?

A
  • Trimmable Horizontal Stabilizer (THS)

- Rudder (on older models)

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13
Q

What happens to the outboard ailerons at high speed?

Why?

A
  • above 190kts the outboard ailerons are controlled to the zero deflection position.
  • To prevent aileron reversal, excessive wing forces, or damage
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14
Q

At what speed will the spoilers deflect on an RTO?

A
  • Above 72kts groundspeed
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15
Q

What happens if one hydraulic system or SFCC is inop?

A
  • Flaps/slats operate at half speed
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16
Q

Instead of a mechanical link to the rudder as on some older models of the A330, what do the newer models provide?

A
  • Backup Control Module
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17
Q

What are the protection limits of the pitch attitude protection?

A
  • 30 degrees nose up

- 15 degrees nose down

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18
Q

What happens if hydraulic pressure is lost to one of the spoilers?

A

It remains in the current position unless blown back by aerodynamic forces

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19
Q

How does one recover from the AlphaFLOOR protection?

A
  • Decrease the AoA by easing forward on the side stick until past AlphaPROT
  • Disconnect A/THR by disconnect pb
  • Resume normal flight
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20
Q

When does “SPEED SPEED SPEED” alert occur?

A
  • Immediately before AlphaFLOOR
  • Between 100’ and 2000’
  • Config 2,3, Full
  • Normal Law only
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21
Q

When flying at AlphaMAX and the sidestick is released, what happens?

A

The aircraft returns and maintains AlphaPROT

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22
Q

When does AlphaFLOOR activate?

A

Between AlphaPROT and AlphaMAX

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23
Q

What is the ARS and what does it do?

A
  • Automatic retraction system

- Retracts the flap in the 1+F config at 200kts to prevent over-stressing of the flaps

24
Q

How long does one pilot have to push the sidestick takeover pb in order to deactivate the other sidestick?

A

40 sec

25
Q

At what altitude does flare mode commence?

What happens to the THS and elevator controls?

A
  • 100ft RA
  • THS is frozen
  • Elevator is directly controlled by side stick
26
Q

During normal law, what is the bank angle limit the aircraft allows you to fly to?

A

67 degrees AoB

27
Q

What protections are there in normal law?

A
  • Load factor limitation
  • Pitch attitude protection
  • High AoA protection
  • High speed protection
  • Bank angle protection
28
Q

How do you know that the aircraft is in normal law?

A
  • The green bars (protection symbols) are displayed
  • No ECAM message
  • All the protecrions are available
29
Q

When does the high speed protection activate? What does it do?

A
  • When the aircraft exceeds Vmo/Mmo

- It applies a nose up order allowing the aircraft to return to the normal envelope

30
Q

What does the small green bar symbol indicate on the speed tape?

A
  • Vmo + 4kts and Mmo + 0.006

- Overspeed ECAM will activate

31
Q

How do you know that the aircraft is in direct law?

A
  • ECAM message
  • Amber ‘x’ appears instead of green protection symbols (pitch and AoB)
  • No AlphaPROT indication (amber/black stripes)
  • ‘USE MAN PITCH TRIM’ (amber) message appears on PFD
  • All protections are lost
32
Q

If the speedbrakes are automatically retracted due to an inhibition (MLA, low speed, alpha floor,….) when can the pilot use the speedbrakes again?

A
  • Once the inhibition factor is removed

- Speedbrakes need to be reset for at least 5sec

33
Q

After a sidestick has been deactivated by the sidestick takover pb, can it be reactivated? How?

A
  • Yes

- By pressing the takeover pb once

34
Q

What is the FLRS and what does it do?

A
  • Flap Load Relief System
  • Retracts the flaps in config 2,3, FULL to prevent over-stressing
  • Flaps will extend again when speed has decreased below threshold
35
Q

What are WTB and what do they do?

A
  • Wing tip brakes
  • Stop flaps/slat movement in case of:
  • asymmetry
  • overspeed
  • symmetrical runaway
36
Q

If the rudder travel limiter fails in flight is rudder control limited?

A

Yes, but sufficient yaw control is available in all phases of flight

37
Q

During high speed protection, what is the bank angle limit if you maintain a sidestick order?

A

45 degrees

38
Q

If the sidestick is held back, will the aircraft stall?

A

If the protection is active it will maintain AlphaMAX

39
Q

How many PRIM’s and SEC’s does the A330 have?

A
  • 3 PRIM’s

- 2 SEC’s

40
Q

What does the high speed protection do when the sidestick is kept full forward?

A
  • At Vmo +16kts / Mmo + 0.04 the nose down pitch reduces to 0
    (aircraft may still exceed this speed)
41
Q

What ‘g’ loads does the load factor protection allow?

A

+2.5 to -1.0 g, slats retracted

+2.0 to 0 g, slats extended

42
Q

How are the flight control surfaces controlled?

A
  • Ailerons - Electrical
  • Spoilers - Electrical
  • Rudder - Mechanical (yaw damping and trim - electrical)(new model - all electrical)
  • Speedbrakes - Electrical
  • Elevator - Electrical
  • Stabilizer - Electrical/Mechnical
43
Q

Does the autopilot stay in during the high speed protection?

A

Yes unless the speed exceed Vmo + 12kts /Mmo + 0.03

44
Q

What is the speed limitation on alternate law?

A 
Vmo = 330kts
Mmo = 0.82
45
Q

In normal law in a steep turn, you release the sidestick. What AoB does the aircraft return to?

A

33 degrees AoB

46
Q

Which controls are still available in mechanical backup law?

A
  • THS through the trim

- Rudder through the rudder pedals

47
Q

How many spoilers does the A330 have?

A
  • 6 spoilers on each side
48
Q

During high speed protection, what AoB does the aircraft command when the sidestick is released?

A

0 degrees AoB

49
Q

When does abnormal attitude law activate?

A
  • When the aircraft is in extreme attitudes

/speeds outside of the flight envelope protections

50
Q

How do you know the aircraft is in alternate law?

A
  • ECAM message
  • Amber ‘x’ appears instead of green protection symbols (pitch and AoB)
  • No AlphaPROT indication (amber/black stripes)
  • Some protections are lost (pitch attitude, bank angle)
51
Q

What does the Slats Alpha/Speed Lock Function do?

A

It inhibits slats retraction at high AoA and/or low speed

52
Q

What happens if electrical power is lost to one of the spoilers?

A
  • It is controlled to the retracted position

- The opposite side spoiler is inhibited

53
Q

What is the speed limitation in direct law?

A 
Vmo = 330kts
Mmo = 0.80
54
Q

What are the reconfiguration control laws?

A

(- Normal law)

  • Alternate law 1
  • Alternate law 2
  • Direct law
  • Mechanical law
  • Abnormal attitude law
55
Q

If the spoilers are not armed and an RTO is performed, will the spoilers deflect?

A
  • Yes if
  • Above 72kts
  • At least one reverser is set to reverse (other at idle)
56
Q

What does the flare mode do at 50ft?

A

It introduces a slight pitch down moment

A330/350 Systems (8 decks)

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