*Flight Controls-Flight Control Laws

Question 1

What protection do you have in Normal Law?

5

Answer 1

-High Speed
-High AOA (Alpha protection)
-Load Factor (+2.5/-1)
-Pitch Attitude (30 deg up/15 deg down)
-Bank Angle (67 deg)

Question 2

*How does the high speed protection operate?

Answer 2

If Vmo/Mmo plus a predetermined factor (6 kts/0.1M) is exceeded, the system induces a pitch up input to limit aircraft speed.

Question 3

*Can the pilot override this (high speed protection) pitch-up?

Answer 3

No

Question 4

*What is Alpha Max?

Answer 4

The maximum AOA allowed in Normal Law, indicated by the top of the red strip on the airspeed scale.

Question 5

*How does High Angle of Attack Protection operate?

Answer 5

When the AOA exceeds Alpha Prot, pitch trim ceases and AOA is now proportional to sidestick deflection, not to exceed Alpha Max even with full aft sidestick deflection.

Question 6

What is Alpha Floor Protection?

Answer 6

When the AOA exceeds a specific threshold (between Alpha Prot and V Alpha Max) the A/THR is automatically activated and commands TOGA thrust, regardless of TL position.

Question 7

Alpha Floor Protection is a function of what system?

Answer 7

-A/THR
-Requires operative A/THR system to operate

Question 8

What happens to thrust and what annunciates on the FMA when you reach A Floor?

Answer 8

-Thrust……TOGA
-FMA………A. FLOOR

Question 9

What occurs during Alpha Floor Protection after speed increases above Vls?

Answer 9

FMA changes to TOGA LK

Question 10

How do you regain normal A/THR?

4

Answer 10

-Move TLs to the TOGA detent.
-Press the Instinctive Disconnect button.
-Return the TLs to the CL detent.
-Press the A/THR pb

Question 11

When is Alpha Floor Protection active?

Answer 11

From lift-off through 100 ft. RA on approach

Question 12

Can you override the high or low stabilities in Alternate Law?

Answer 12

Yes

Question 13

If you are in Alternate Law, what law would roll be?

Answer 13

Direct Law

Question 14

Can you stall the aircraft in Normal Law?

Answer 14

Not in Normal Law, but the aircraft can be stalled in all other laws.

Question 15

*What PDF indications indicate Normal Law?

2

Answer 15

-Green = for pitch, bank and overspeed limits
-Amber/black (A prot) airspeed tape

Question 16

*What is indicated if on the PFD pitch and bank limits are amber Xs?

Answer 16

You are not in Normal Law

Question 17

*What would cause you to revert to another law?

Answer 17

Multiple failures of redundant systems.

Question 18

*What law are you in when you perform the flight control check on the ground?

Answer 18

Normal law, ground mode.

Question 19

*Can the aircraft be flown with a loss of all flight computers?

Answer 19

Yes, in mechanical back up.

Question 20

*What protection do you have in ALTERNATE LAW?
3

Answer 20

-Load Factor
-High Speed Stability (nose up command) can be overridden
-Low Speed Stability (nose down command) can be overridden

Question 21

*Can you override High Stability in alternate law?

Answer 21

yes

Question 22

*What protection do you have in Direct Law?

Answer 22

None

Question 23

*If you are in Pitch Alternate Law, what law would roll be?

Answer 23

Direct Law

Question 24

*When is there a direct relationship between sidestick and flight control surfaces deflection?

Answer 24

-Normal law, ground mode.
-Direct law.
-Below 50’ in flare mode (pitch only).

Question 25

*How would you get into Abnormal Attitude Law?

Answer 25

By exceeding approximately double the Normal Law limits.

Question 26

*What is the purpose of Abnormal Attitude Law?

Answer 26

Allows the aircraft to be recovered from an unusual attitude.

Question 27

*After recovery from an unusual attitude, what law will you be in?

Answer 27

When the aircraft returns within normal flight envelope, the abnormal attitude law disengages, and aircraft remains in the alternate law with reduced protection for the remainder of the flight.

Question 28

*How is the airplane controlled in Mechanical Backup?

Answer 28

Pitch- Trim Wheel (Horizontal Stab)
Yaw- Rudder Pedals (rudder)
Speed-Thrust Levers.