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British Airways > Flight Controls > Flashcards

Flight Controls Flashcards

1
Q

How many spoilers?

A

5

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2
Q

Which spoilers for roll controll?

A

4 outer 2/3/4/5

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3
Q

Which spoilers for speed brake?

A

3 central, 2/3/4

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4
Q

Which spoilers for GND spoiler?

A

All 5

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5
Q

What is in the FCC?

A

ELAC x 2
SEC x 3
FAC x 2 (not on flight control page)

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6
Q

What is the FCDC?

A

Flight control data concentrator, takes info from SEC or ELAC and sends to EIS/ECAM Two FCDCs
Data from both FACs sent directly to EIS

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7
Q

How many Slats?

A

5 on each wing

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8
Q

How many flaps?

A

2 on each wing

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9
Q

What is the SFCC?

A

Slat Flap Control Computer.
2 Channels in each, Flaps Slats.
Normally both operate together
Slow if only one channel

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10
Q

When will the Green Bank limit show during start?

A

When 1st engine started.

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11
Q

What is the flight control Ground mode?

A

Direct relationship between stick movement and control deflections.

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12
Q

What happens to the ailerons when flaps are out?

A

New neutral position of about 5deg, will see a new neutral position on ECAM page

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13
Q

When will the auto flap retraction happen?

A

At 210kts. Will retract to Conf 1 which in the air is slats only. So if you take-off with 1+F will retract just flaps. If you select Conf 2 in air then accelerate it will retract to Slats only at 210kts.

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14
Q

Is there auto slat retract?

A

No.

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15
Q

If AP in and move speed brake to full what happens?

A

It is limited to 1/2 position. 25deg for 3/4 12.5deg for 2

As opposed to 40deg and 20deg respectively

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16
Q

When flying at high speed how long to fully retract spoilers?

A

Up to 25 sec.

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17
Q

When will you see a green Speed Brake memo?

A

Each time you use it with Idle

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18
Q

When will you see a flashing amber speed brake memo?

A

One engine above idle for more than 50sec

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19
Q

What is the flare mode?

A

At 50ft memorises pitch attitude, at 30ft reduced pitch over 8 sec

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20
Q

When will you see Landing Memo?

A

2000ft

Or 800 if not flown above 2200ft

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21
Q

When will the GND spoilers activate?

A

Both main wheels compressed and both thrust levers at idle.

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22
Q

Will GND spoilers activate if not in armed position?

A

Yes when at least one rev selected.

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23
Q

What will happen to GND spoilers if only one wheel gear is compressed?

A

Will extend by 1/2 until both wheels compressed.

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24
Q

When will ground spoilers retract on ground?

A

Not in idle
Lever set to Ret
If hadn’t Armed the lever then will retract when reverse is cancelled.

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25
Q

What will happen to the AP disconnect warning after a few seconds if disconnected normally?

A

Will stop automatically.

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26
Q

Who has priority if both pilots press take-over button?

A

Last one to press.

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27
Q

How long should you press take-over button for?

A

40sec, to deactivate other stick so inputs are not added together when released. To activate again one wee press on take-over button.

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28
Q

When will the green CAPT/FO priority light go out?

A

When other pilot releases stick.

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29
Q

What does CAPT/FO green lights flashing mean?

A

Dual input, will hear ‘Dual input’

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30
Q

What is Load Factor limitation?

A

+2.5g -1g Clean

+2 to 0g in other config.

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31
Q

What is Pitch attitude protection?

A

Small green dashes on PFD from 20-30deg depending on configuration. Nose down at 15deg

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32
Q

What does the AoA protection do?

A

Prevents stalling, optimum performance in extreme manoeuvres such as windshear or EGPWS

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33
Q

What is V alpha prot speed?

A

Top of the amber and black line in normal mode. Speed that the Alpha protection kicks in and side stick defection is now proportional to AoA instead of Load Factor.

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34
Q

What is V alpha max?

A

Max AoA available in normal mode.

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35
Q

What calculates VLS?

A

FAC

36
Q

What is VLS?

A
  1. 13Vs on take-off
  2. 23 after 1st flap retraction
  3. 28 after clean
37
Q

What is the Low Energy Warning?

A

Speed x3
Computed by FAC
Normal Law 100-2000ft RA in conf 2/3/full
not in TOGA.

38
Q

What happens to AP at V alpha prot?

A

Dissengages

39
Q

If no side stick input at Alpha Prot what will the FCC do?

A

Maintain V alpha prot by pitching down.

40
Q

How do you override alpha prot?

A

Pull back side stick, if release it will go back to V alpha prot.

41
Q

When is Alpha floor available?

A

From lift-off to 100ft RA

42
Q

When will Alpha Floor kick in?

A

Between alpha prot and alpha max. Depending on configuration.

43
Q

What shows you when high speed protection will be activated?

A

Green dashes on speed scale.

44
Q

When will you get Overspeed ECAM warning?

A

Above Vmo+4

Mmo + 0.006.

45
Q

What happens to AP at overspeed protection.

A

Dissengages at Vmo +15 Mm0 +0.04

46
Q

What happens to side stick authority at overspeed protection?

A

Reduces pitch down authority
Then apply pitch up to slow you down
As soon as below Vmo/Mmo it reverts back to normal.

47
Q

How far above Vmo/Mmo when side stick pitch down is removed?

A

Vmo +16
Mmo +0.04
May accelerate above this speed though.

48
Q

What happens to Bank angle when in overspeed?

A

Reduces to 0deg if no sidestick input. (instead of 33)

Limit reduced from 67deg to 40deg

49
Q

Bank angel protection, what happens at 33deg?

A

Auto trim stops. Need to apply back pressure

50
Q

What is the maximum angle of bank normally?

A

67deg
45deg if AoA protection
40deg if High Speed Protection

51
Q

What angle of bank will autopilot disengage/FD disapear?

A

45deg

52
Q

When will the FD bars return after bank >45deg?

A

Return below 40deg

53
Q

What sets the Beta Target?

A

FAC

54
Q

What are the three levels of reconfiguration?

A

Alternate with or without reduced protection
Direct
Mech backup

55
Q

When does ground mode become active on landing?

A

5sec after touchdown

56
Q

What is the Alternate Law pitch control in flight mode?

A

Similar to Normal law, G, but with reduced protections

57
Q

What is the flare mode in alternate law?

A

Direct Law when you lower the gear.

58
Q

What is the Alternate Law roll control?

A

Direct Law

59
Q

What is the alternate Law Yaw control

A

Yaw damping only up to 5deg of deflection.

60
Q

What is the alternate law reduced load factor protection?

A

Similar to Normal Law

61
Q

What is the alternate law reduced pitch attitude protection?

A

None, will see amber XX next to where green bars would normally be

62
Q

What is the low speed stability in alternate law?

A

Will still have VLS but black and red bar now to show Vsw
Gentle nose down signal around 5-10kts above Vsw
Can be overridden
Injects a bank angle protection to maintain angle of attack
STALL +crickets sound
No Alpha Floor
Same in all configurations

63
Q

What is the high speed stability in alternate law?

A

introduces nose up demand above Vmo/Mmo
No Green Dashes
Still get Overspeed Warning
AP out at Vmo/Mmo

64
Q

What is the bank angle protection in alternate law?

A

None
Green dashes replaced by amber xx
AP out at 45deg

65
Q

What is alternate law without reduced protections?

A

No high or low speed protections, only load factor.

66
Q

How will you know in Alternate Law?

A

FCTL ALTN LAW ECAM

Protections are replaced by stabilities.

67
Q

What is available under direct law?

A

No protections, only overspeed and stall oral alerts
Manual trim
Yaw control through rudder pedals

68
Q

What mode if loose power to all FCCs?

A

Mech backup

69
Q

How will you know if you’re in Mech backup mode?

A

Man pitch trim only red message on PFD.

70
Q

How do you control pitch in Mech backup?

A

THS through man pitch trim as long as green or yellow hyd pressure

71
Q

How do you control lateral in Mech Backup?

A

Rudder pedals provided at least one hyd system powered.

72
Q

What do the ELACs control?

A

Elevators and Ailerons

73
Q

What do the SECs control normally?

A

Spoilers, shared by three SECs

74
Q

What can the SECs control?

A

Elevators and THS during reconfiguration if both ELACs fail

75
Q

What do the FACs control?

A

Rudders

76
Q

How many Hyd systems for Aileron Elev Rud and Spoilers

A 
Aileron 2
Rudder 3
Elevator 2
Spoiler 3
Each individual spoiler is only connected to one Hyd system.
77
Q

What are Active and Damping mode?

A

Either hyd actuator 1 or 2 is in active mode and the other in in damping mode. One Hyd actuator controlled by one FCC

78
Q

What does a partial amber box around the hyd G B or Y mean on the F/CNTR page?

A

Associated actuator has gone into damping mode.

79
Q

When resetting a P/B switch how long should you wait?

A

3 sec

80
Q

What happens when both ELACs fail?

A

Roll control by Spoilers SEC

Elevator and THS to SEC 2

81
Q

If an Elevator fails what will happen?

A

Other Elevator will be limited to reduce stress.

82
Q

If both elevators fail what will happen?

A

Both set to damping mode and centred.

83
Q

What happens if one Spoiler fails inposition?

A

Symmetric one will be inhibited automatically.

84
Q

What happens if speed-brake extension is inhibited?

A

Need to return to RET for 10 sec

85
Q

What are the WTBs?

A

Wing tip breakers, will stop movement of flaps slats or spoilers if any failure, runaway or asymmetric situation.

86
Q

With Slat WTB will flaps be effected?

A

No, and vice versa.

87
Q

Slats Alpha Speed Lock Protection?

A

Prevents retraction at high AoA or low speed. A LOCK pulsing blue.

British Airways (22 decks)

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