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Flashcards in Flight Controls Deck (38):
0

Primary flight control
System composed of

4

Ailerons and multi function roll spoilers
Elevators
Rudder

1

Secondary flight control system composed of

4

Horizontal stab
Flaps and slats
Multifunction spoiler when used as speed brakes or ground spoilers
Dedicated ground spoilers

2

Which controls are fly by wire

Elevators
Rudders
All secondary flight controls

3

Which controls are not fly by wire

Ailerons

4

What are the 2 primary flight control electronics

P- ACE. ( primary actuator control electronics)

FCM. (Flight control modules)

These 2 together operate either
The electro hydraulic

Or

Electro mechanical actuators

5

How many FCM's

4

6

How many ACE's

9

7

2 modes of FCS OPERATION

Normal and
Direct

8

What is direct mode

The FCM is removed from the loop

I.e. Loss of data from all FCM or multiple ACE failures

9

How can pilot change modes

Pushing the flight controls mode button will always let pilot toggle between modes

10

What is the PBIT test and how long is it good for

Power up built in test

Tests both electrical and hydraulic systems

Good for 50 hours

11

How long does the electrical PBIT take

3 minutes

Automatic on power up

12

How long does the hydraulic PBIT take

1 minute

Performed automatically on ground when all 3 hydraulic systems are powered

13

The hydraulic PBIT does not run when reservoir temps are lower than _____. Except when

50°f or 10°c
Flt control bit expired is shown

14

How are elevator surfaces actuated

Hydraulically through PCU

15

What does the ETC do

Elevator thrust compensation

Applies elevator controls to reduce pitching from thrust changes

16

How is the horizontal stabilizer controlled

Electro-mechanical by either the trim switches

Yoke or pedestal

Or through FCM from autopilot and speed brakes

17

Manual pilot trim inputs are limited to __ second intervals to prevent runaway

3

18

Stabilizer trim priority

1. Backup switches
2. Captain
3. First officer
4. FCM

19

In case if electrical failure followed by RAT deployment the trim function will operate at

Half speed for manual or autopilot

20

On which side is the aileron AFU located

Captains

21

How many multifunction spoiler panels

6
L3, L4, L5. ( left wing)
R3, R 4, R 5( right wing)

22

How is the rudder controlled

2 Electro hydraulic actuator

Captain controls upper and
FO THE lower

23

How many flaps and slats

4 flaps --/2 per wing
8 slats-// 4 per wing

24

How many flap/slat positions

6

25

Are flaps slats electrical or hydraulic

Electrical

26

Can the slats flaps be moved if the strike protection is actuated

Yes, up to 2 more times

27

If the RAT. Is only source if AC power the slats flaps operate at ___ and they are limited to flap position___

Half speed

Flaps 3 to provide adequate airflow for the RAT

28

Will flaps still move with a slat failure

What about the other way

Yes

29

How many spoiler panels

10 which includes the 6 multifunction panels 3-5

30

3 modes of multifunction operation

Roll control

Speed brakes

Ground spoilers

31

Which spoiler panels actuate for ground deployment

All 10 automatically to full travel limit

32

Requirements for ground spoiler deployment

Weight on wheels
Wheel speed above 45 kts or
Airspeed above. 60 kts
TLA below 26°

33

On rollout when will spoilers retract

Wheel speed below 45 kts for 5 seconds or TLA increased above 35°

34

Ground spoilers not available in

Direct mode

35

Speed brakes not avail in

Direct mode

36

How many panels on speed brakes

All 6 multifunction panels

Up to inflight limit if 30°

37

When will speed brakes automatically retract

Slat flap lever position 2 or higher
Airspeed below 180 kts
TLA beyond 70° ( go around)