Flight Controls

Question 1

Which Power Control Unit (PCU) is the Captains control wheel connected to?

Answer 1

Aileron PCU.

Question 2

Which Power Control Unit (PCU) is the First Officers control wheel connected to?

Answer 2

Spoiler PCU.

Question 3

What system allows actuation of both the ailerons and spoilers by either control wheel?

Answer 3

Cable Drive System.

Question 4

If the aileron control system is jammed, how is roll control provided?

Answer 4

By spoilers using the First Officers control wheel.

Question 5

If the spoiler system is jammed how is roll control provided?

Answer 5

By the ailerons using the Captains control wheel.

Question 6

Can you trim the ailerons with the autopilot engaged?

Answer 6

No.

Question 7

How much control wheel deflection (approx.) will initiate the spoilers for roll control?

Answer 7

10°

Question 8

How many flight spoilers are located on each wing?

Answer 8

4.

Question 9

How are aerodynamic forces transmitted to the control columns for the elevator?

Answer 9

Via the elevator feel and centring unit.

Question 10

At what Mach number will the Mach Trim System automatically commence?

Answer 10

Mach .615

Question 11

The trailing & leading edge flaps & slats are powered by which hydraulic system?

Answer 11

System B.

Question 12

What does illumination of the FEEL DIFF PRESS light indicate?

Answer 12

A failure of either hydraulic system or elevator feel pitot system.

Question 13

What are the two speed modes that the stabiliser trim utilises?

Answer 13

High speed, flaps extended.
Low speed, flaps retracted.

Question 14

What are the 4 conditions that the Speed Trim System will come into effect under?

Answer 14

(i) Low weight
(ii) Aft CG
(iii) High thrust
(iv) Autopilot disengaged

Question 15

What system controls the Yaw Damping functions?

Answer 15

The Stall Management/Yaw Damper computers.

Question 16

Above approximately what speed will rudder authority be automatically reduced?

Answer 16

135kts.

Question 17

Which hydraulic system does the main Yaw Damper utilise?

Answer 17

System B.

Question 18

After a loss of hydraulic pressure, the Yaw Damper switch will disengage. When can you reset the switch to on?

Answer 18

After you have selected both FLT CONTROL switches to STBY RUD.

Question 19

What type of trailing edge flaps are fitted?

Answer 19

Double slotted flaps.

Question 20

Which side does the Flap Load Relief system draw speed information from?

Answer 20

The Captains.

Question 21

Which hydraulic system primarily powers the autoslats?

Answer 21

System B.

Question 22

When using alternate flap extension, which hydraulic system powers the LE Flaps?

Answer 22

The Standby hydraulic system.

Question 23

Can the LE devices be retracted using the standby hydraulic system?

Answer 23

No.

Question 24

Which switch operates the TE flaps if Hydraulic System B fails?

Answer 24

ALTERNATE FLAPS master switch.

Question 25

What monitors the position of the LE and TE devices?

Answer 25

The Flap Slat Electronics Unit (FSEU).

Question 26

Are the TE Flaps extended/retracted during Alternate Extension electrically or hydraulically?

Answer 26

Electrically.

Question 27

What are the 4 ways the STBY RUD can be activated?

Answer 27

(i) Manually (ii) Automatically (iii) FFM (iv) Alternate Flap

Question 28

What is the purpose of the Force Fight Monitor (FFM)?

Answer 28

It detects opposing forces between the System A & B actuators to automatically pressurise the standby rudder PCU to help retain adequate rudder control.