27-20-10 Flight Control Laws

Question 1

What are the 5 Normal Law protections?

Answer 1

High Speed
High AoA
Pitch Attitude
Load Factor
Bank Angle

Question 2

Flight controls - What is the pitch control ground mode?

Answer 2

Sets the THS to 0.

Question 3

In normal law what g load is pitch limited to?

Answer 3

1g

Question 4

What happens during flare mode?

Answer 4

Passing 50RA THS is frozen and changes to flare mode

Question 5

What rate of nose down does the aircraft provide in flare mode?

Answer 5

2 degrees nose down over 8 seconds

Question 6

What is the load factor protection values?

Answer 6

+2.5 g to -1g clean

+2 g to 0g other configs

Question 7

What are the pitch protections?

Answer 7

30 degrees nose up in config 0-3
25 degrees nose up in config FULL
15 degrees nose down

Question 8

When does high AoA protection activate?

Answer 8

When AoA become greater than Alpha PROT

Question 9

What is the lowest speed that can be flown in normal law?

Answer 9

Alpha Max

Question 10

What is the normal bank angle limit?

Answer 10

67 degrees

Question 11

What is the max bank angle if High Speed protection is active?

Answer 11

40 degrees

Question 12

What high speed does the autopilot disconnect?

Answer 12

VMO + 15 kts

Question 13

What speed are the high speed bars at?

Answer 13

VMO + 6 kts

Question 14

How does the high speed protection work?

Answer 14

As speed increases above VMO a nose up order is applied.

Question 15

What bank angle is the max that the aircraft will maintain?

Answer 15

33 degrees

Question 16

What is the max bank angle with pilot maintaining the input?

Answer 16

67 degrees

Question 17

In alternate law WITH reduced protections which protections are lost?

Answer 17

AoA protection replaced by low speed stability
High speed protection replaced by high speed stability
Alpha floor is inop
Bank angle protection lost
Pitch attitude protection is lost

Question 18

What does Alt Law WITHOUT protections have?

Answer 18

Same as alternate law but no low or high speed stability.

Question 19

What happens when high AoA is activated?

Answer 19

The side stick input becomes angle of attack demand rather than load factor demand

Question 20

What does the side stick command during normal law?

Answer 20

Load factor

Question 21

What is the only remaining protection in Alternate law without reduced protections?

Answer 21

Load factor limitation

Question 22

What is abnormal attitude law?

Answer 22

Law that engages to give pilot maximum authority to recover normal attitude.

Question 23

What are the values that engage abnormal attitude law

Answer 23

125 degrees AoB
Speed below 60-90kts
Speed greater than 440kts or M0.91
AoA greater that 30-40 or less than -10

Question 24

Which protection has priority over all other protections?

Answer 24

High angle of attack

Question 25

What is the spiral static stability during high speed protection in comparison to normal law?

Answer 25

Bank angle stability reduced to 0 rather than 33 degrees

Question 26

In normal law, once high AoA is activated what speed will the protection maintain without pilot input?

Answer 26

Alpha Prot