Flight Controls

Question 1

What are the indications that alpha lock is triggered?

Answer 1

A-LOCK pulses on EWD (just above the slats on the slat/flap position indicator)

Question 2

What are the characteristics of abnormal attitude law?

Answer 2

Operates like normal law with no stabilities, and auto pitch trim is also lost

Question 3

What does low speed stability do in alternate law? Can this be overridden?

Answer 3

Introduces a progressive nose down input, which can be overridden by pilot input

Question 4

In mechanical backup, what can be used to control the aircraft?

Answer 4

THS, rudder and differential thrust

Question 5

What does high speed stability do in alternate law? Can this be overridden?

Answer 5

Introduces a nose up demand when above VMO/MMO which can be overridden by pilot input

Question 6

What are the flap limiting speeds for A319 and A320 in config 1

Answer 6

230kts

Question 7

When do you get an overspeed warning?

Answer 7

VMO +4
MMO +0.006

Question 8

At what point does AP disconnect in slow speed?

Answer 8

Valpha prot + 1 degree

Question 9

What are the flap limiting speeds for A319 and A320 in config 3

Answer 9

185kts

Question 10

What does FAC stand for? What does it do?

Answer 10

Flight Augmentation Computer.

It has several main functions, including:
Rudder trim
Rudder travel limits
Yaw damping inputs
Alternate law
Flight envelope and speed computations
Wind shear detection

Question 11

At what angle of bank does the AP disconnect?

Answer 11

45 degrees

Question 12

In what conditions might you need to reset autothrust on approach?

Answer 12

In A319 only, if changing configuration with speed brakes extended, A/THR may settle 10kts above applicable speed target. This can be reset by recycling the A/THR button on FCU

Question 13

When is abnormal attitude law triggered?

Answer 13

When normal law envelope is exceeded by external forces (eg wake turbulence encounter)

Question 14

What happens once recovered from abnormal attitude law?

Answer 14

Auto pitch trim is regained, and aircraft will be in alternate law for the remainder of the flight. The aircraft lands in alternate law

Question 15

With sustained sidestick input, what will speed decay until?

Answer 15

ValphaMax

Question 16

At what angle of bank do the FDs disappear?

Answer 16

45 degrees

Question 17

Which spoilers deploy for speed brakes?

Answer 17

Middle 3

Question 18

When does AP disconnect in overspeed?

Answer 18

VMO +15
MMO +0.04

Question 19

What is the purpose of abnormal attitude law?

Answer 19

Prevents normal law from impeding recovery

Question 20

With A/THR engaged, what lowest speed will you decrease towards?

Answer 20

VLS +/-2kt

Question 21

When does the aircraft revert to direct law?

Answer 21

When in alternate law, gear down, AP off for landing

Question 22

What is the high AoA protection bank angle limit?

Answer 22

45 degrees

Question 23

What triggers alpha lock?

Answer 23

Activated by SFCCs when flap lever moved from position 1 to 0 and either:
Alpha above 8.5 degrees or
Speed below 148kts

Question 24

How can you identify that you are in mechanical backup?

Answer 24

MAN PITCH TRIM ONLY in red on PFD

Question 25

What is VLS?

Answer 25

Lowest selectable speed

Question 26

Are hydraulics required in mechanical backup to manoeuvre the aircraft?

Answer 26

Yes, either the green or the yellow system needed

Question 27

How many slats per wing?

Answer 27

5

Question 28

Which control surfaces have mechanical controls?

Answer 28

Rudder and THS. The rest are electronically controlled and hydraulically activated

Question 29

What is VMO/MMO?

Answer 29

350kt/M0.82

Question 30

Below alpha prot, what does sidestick command?

Answer 30

Alpha, instead of load factor