Flight Controls

Question 1

How are the flight control surfaces controlled and activated?

Answer 1

Electronically controlled and hydraulically activated

Question 2

How many slats?

Answer 2

10 - 5 on each wing

Question 3

How many spoilers?

Answer 3

10 - 5 on each wing

Question 4

What is ELAC?

Answer 4

Elevator aileron computers - two onboard, used for normal elevator and stabiliser control and aileron control

Question 5

What is SEC?

Answer 5

Spoiler elevator computer - 3 onboard used for spoilers control and standby elevator and stabiliser control

Question 6

What is FAC?

Answer 6

Flight augmentation computer - used for electrical rudder control

Question 7

What controls roll?

Answer 7

2, 3, 4, 5 plus ailerons

Question 8

What are the speed brakes?

Answer 8

2, 3, 4 spoilers

Question 9

When will ground spoilers automatically extend when armed?

Answer 9

If the wheel speed exceeds 72 kts they will automatically extend as soon as both thrust levers are set to idle

Question 10

Limit for manual braking?

Answer 10

You will not get manual braking below 72 kt

Question 11

When will ground spoilers automatically extend when not armed?

Answer 11

As soon as reverse is selected on one engine

Question 12

What are the five protections in normal law?

Answer 12

• Load factor
• Pitch attitude
• High AoA
• High speed
• Bank angle

Question 13

Pitch attitude protection limits

Answer 13

• 30 degrees nose up in conf 0 to 3 (progressively reducing to 25 at low speed)
• 25 degrees nose up in conf full (progressively reducing to 20 at low speed)
• 15 degrees nose down

Question 14

When do the FD bars disappear from the PFD?

Answer 14

When the pitch attitude exceeds 25 degree up or 13 degrees down

They will reappear at 22 degrees up and 10 degrees down

Question 15

When is high speed protection activated?

Answer 15

At Vmo + 6 kt

Question 16

What is aileron droop?

Answer 16

When flaps are extended the ailerons deflect 5 degrees down to provide extra lift

Question 17

What is the max roll rate in normal law?

Answer 17

15 degrees per second

Question 18

What is the max bank angle in normal law?

Answer 18

67 degrees

Question 19

What is the max bank angle if AoA protection is active?

Answer 19

45 degrees

Question 20

What is the max bank angle if high speed protection is active?

Answer 20

40 degrees

Question 21

What are the indications you are in Alternate Law?

Answer 21

• ECAM will show ALTN LAW
• Amber crosses
• Modified speed scale shows Vsw

Question 22

What protections do you have in Alternate Law (with reduced protections)?

Answer 22

• Load Factor protection
• Low speed stability - replaces AoA protection
• High speed stability - above Vmo/Mmo will command a nose up

Question 23

What protections do you have in Alternate Law (without reduced protections)?

Answer 23

• Load Factor

Question 24

What are the indications you are in Direct Law?

Answer 24

• ECAM
• USE MAN PITCH TRIM

Question 25

Indication for Mechanical Back up

Answer 25

MAN PITCH TRIM ONLY

Question 26

What colour is alpha prot

Answer 26

Orange and black

Question 27

What colour is alpha max

Answer 27

solid red

Question 28

What speed will you get in Alternate Law?

Answer 28

Vsw

Question 29

Why will the slats operate at half speed?

Answer 29

Following a loss of one SFCC or following the loss of hydraulic supply

Question 30

What is SFCC?

Answer 30

Slat and Flap Control Computer - two onboard

Question 31

What two control surfaces can be mechanically controlled?

Answer 31

THS and rudder

Question 32

What is the FCDC?

Answer 32

Flight Control Data Concentrator - two onboard They acquire data from the ELACs and SECs and send it to the EIS (Electronic Instrument System) and the CFDS (Centralised Fault Display System)

Question 33

What are the control modes of the electrically controlled, hydraulic servo jacks?

Answer 33

Active - the jack is electrically controlled Damping - the jack follows surface movement Centring - the jack hydraulically locked in the neutral position

Question 34

When do you get alpha prot and alpha max?

Answer 34

In normal law

Question 35

How many flap positions are there?

Answer 35

Five positions - 0, 1, 2, 3, FULL

Question 36

What is alpha lock?

Answer 36

It prevents the slats from retracting below a specific speed (148 kt) and AoA limit (8.5 degrees)

Question 37

What control surfaces do you have in mechanical back up?

Answer 37

THS and rudder