Flight Controls

Question 1

What are the primary flight control system

Answer 1

Aileron
Spoilers ( as roll control)
Elevator
Rudder

Question 2

Secondary flight control

Answer 2

Horizontal stabilizer
Slats and flaps
Spoilers (as brakes)
Ground spoilers

Question 3

Which flight control is conventionally controlled

Answer 3

Ailerons are cable connected

But still has a hydromechanical actuator

Question 4

What are PCU

Answer 4

Power control units

The actuators That move the control surfaces

Question 5

What are the modes of operation in the flight controls

Answer 5

Normal (flight control module) FCM helps in proper inputs to the control
Direct. The FCM is bypass and pilot inputs are no longer dampened

Question 6

What is PBIT

Answer 6

Is a power up built in test to make sure the control system work normally

Question 7

High level function of the elevator

Answer 7

AOA limiter
Auto trim
Autopilot
Elevator thrust compensation

Question 8

What type of actuator the does the horizontal stabilizer use

Answer 8

Electro- mechanical

Question 9

What type of actuator the elevator uses

Answer 9

Hydraulic actuated

Question 10

What is the priority of the trim commands

Answer 10

Backup trim command
Pilot trim
FO trim
FCM command

Question 11

How many channels in the HS- ACE ( horizontal stabilizer actuator control electronic)

Answer 11

Two channels active/sttby

Alternating every powerup

Question 12

Can the pilot deactivate the HS-ACE channels

Answer 12

Both channels by pressing the red Pitch/trim disco and holding it

Or by pushing guarded cut out button on the center console

Question 13

What is the function of the multi function spoilers

Answer 13

Augment aileron roll control
Speed brake
Ground spoiler augmentation

Question 14

How many multi function spoilers panel

Answer 14

6 spoilers 3 a side

Question 15

When will the speed brakes automatically retract

Answer 15

When IAS 180 or less

Or advancing the throttle beyond 70 degree position

Question 16

How many ground spilers

Answer 16

4 ground spoilers

Question 17

High level functions of the rudder computer

Answer 17

Yaw dampening

Turn coordination

Question 18

In normal condition how many PCU controls the rudder

Answer 18

1 the other in standby

Question 19

If RAt is the only source of electricity can you extend the flaps

Answer 19

Only to position 3

Question 20

How flaps / slats are powered

Answer 20

By electrical Power Drive Units PDU

Question 21

How does the fly by wire works

Answer 21

Pilot inputs and FCM augmentation tell the appropriate ACE to activate the appropriate actuator

Question 22

In electrical emergency and RAT is not Deploy how long do you have for the Fly by wire

Answer 22

10min on regular battery an 15 min on backup battery

Question 23

What will cause the FCM to go into direct mode

Answer 23

Loss of airspeed data

Question 24

What systems interact with the FCM to provide augmentation

Answer 24

ADSP for airspeed augmentation
IRS for AOA limiting

Proximity sensor for WOW for ground spoilers
BCM - for ground spoilers
FADEC- for thrust compensation
Auto pilot

Question 25

How many hours before a BIT test expire

Answer 25

50 hours

Question 26

When is the E BIT test performe

Answer 26

When any source of AC powered is connected

Question 27

When is the Hydraulic BIT performed

Answer 27

When all the 3 hydraulic systems are pressurized

Question 28

What temperature will prevent the Hydraulic PBIT from being performed

Answer 28

10c or less