Flight Controls

Question 1

How is manual control input information sent to the control surface in the normal mode

Answer 1

Pilot control input - ACE’s - PFC - ACEs - control surface

Question 2

How is Autopilot control input information sent to the control surface

Answer 2

a/p - PFC - ACEs - Control surface

Question 3

How many spoilers

Answer 3

14

Question 4

When do flaperons operate

Answer 4

In proportion to the flaps

Question 5

When to the ailerons begin to move down for increased lift (droop)

Answer 5

Flaps 5, 15 and 20

Question 6

What are locked out at high speed on the wing to prevent high loads

Answer 6

Ailerons, spoilers 5 and 10

Question 7

When is the rudder aerodynamically effective

Answer 7

60kts

Question 8

What are the modes of operation of primary flight controls

Answer 8

Normal, Secondary and Direct

Question 9

What modes can be manually selected

Answer 9

Normal and Direct

Question 10

What is envelope protection is available in Normal mode

Answer 10

• Stall Protection
• Overspeed protection
• Bank angle protection

Question 11

What functions are lost in secondary mode

Answer 11

• Autopilot
• Auto speedbrakes
• Envelope protection
• Gust suppression
• Tail strike protection
• Thrust assymetry compensation
• Yaw dampening

Question 12

How are control inputs sent to the control surface when in the secondary mode

Answer 12

Same as normal mode, PFC use simplified commands

Question 13

What is lost in the direct mode

Answer 13

• All secondary mode losses
• Manual rudder trim cancel switch

Question 14

What changes when when in the direct mode as far control input signals

Answer 14

PFCs no longer used

Question 15

How is the aircraft controlled if complete electrical failure occurs

Answer 15

Cable operated spoilers and stabiliser

Question 16

Up to what angle of bank will PFCs automatically maintain altitude

Answer 16

30 degrees

Question 17

In flight pitch trim is achieved by changing the _________ reference speed

Answer 17

Trim

Question 18

The alternate stab trim levers are linked to the stab control modules by ________

Answer 18

Cables

Question 19

How does stall protection work

Answer 19

• Trim reference speed inhibited in the nose up direction at approx. min maneuvering speed
• Constant collum pressure at higher than normal force

Question 20

How does overspeed protection work

Answer 20

At Vmo Mmo-
- Trim reference speed inhibited in the nose down direction
- Constant collum pressure at higher than normal force

Question 21

In normal mode automatic pitch trim is provided for what configuration changes

Answer 21

• Thrust changes
• Gear config changes
• turbulence
• flap and speed brake changes
• turns up to 30 degrees AoB

Question 22

In secondary and direct mode, how is the stabilizer trimmeed

Answer 22

Directly

Question 23

In normal mode how is the stabilizer trimmed

Answer 23

Using the trim reference speed

Question 24

What hydraulic system is the stabilizer control

Answer 24

Center and right systems

Question 25

In normal mode with stab trim cutout switches in cutout can pitch trim on the control column be used

Answer 25

yes, trims the elevator using the PFCs

Question 26

What is the purpose of the stab position indicator

Answer 26

- Indicates the stab position, green band for take off - position verified by the nose wheel oleo

Question 27

Is airleron trim available with autopilot on

Answer 27

No

Question 28

Which spoilers are mechanically operated

Answer 28

4 and 11

Question 29

How does bank angle protection work

Answer 29

- If 35 AoB exceeded control wheel force attempts to return the aircraft below 30 AoB - A/P disengage bar disables protection - Can be over ridden by the pilot

Question 30

What happens automatically to rudder deflection as airspeed increases

Answer 30

Reduces to prevent over stressing

Question 31

When will the TAC activate

Answer 31

- More than 10% thrust difference between engines

Question 32

On the ground will the TAC compensate for the full yaw of an engine loss

Answer 32

No, to allow pilot recognition of an engine failure

Question 33

In flight will the TAC compensate for the full yaw of an engine loss

Answer 33

Yes

Question 34

When is TAC not available

Answer 34

- Less than 70kts on the ground - Reverse thrust is applied - Automatically disengaged due system fail or loss of engine data

Question 35

What does the wheel to rudder crosstie do

Answer 35

- Control wheel inputs can deflect the rudder 8 degrees - In flight below 210kts

Question 36

What do yaw dampers do

Answer 36

- Provide coordination - Prevent dutch roll

Question 37

Will gust suppression result in rudder pedal movement

Answer 37

No

Question 38

In secondary and direct mode which spoilers are not available

Answer 38

4, 5, 10, 11

Question 39

When will spoilers deploy

Answer 39

- In ARMED position when main gear wheels on ground and not tilted, with thrust levers idle. - Automatically when reverse thrust IDLE regardless of lever postion

Question 40

When will spoilers retract

Answer 40

- At selection to DOWN - Automatically if either thrust lever is advanced to take off position

Question 41

Automatic speed brakes are available in which modes

Answer 41

Normal only

Question 42

When is flap and slat operation inhibited in flight

Answer 42

- over 275kts - above 20,000ft

Question 43

What are the secondary flight control modes of operation

Answer 43

Primary, Secondary and Alternate

Question 44

When is flap load relief activated

Answer 44

- Flaps 15 or higher - 1 knot above placard speed - Until 5kts below the placard speed

Question 45

What load relief is available in secondary mode

Answer 45

Slats only will retract to the mid position if airspeed reach 256kts

Question 46

When will the auto slat system activate

Answer 46

- Signal from the stall warning system will extend slats to the full position - Retracts a few seconds after signal is removed