FLIGHT CONTROL LAWS Flashcards Preview

Spirit Oral Study Guide > FLIGHT CONTROL LAWS > Flashcards

Flashcards in FLIGHT CONTROL LAWS Deck (21):
1

What protections do you have in Normal Law?

• High Speed
• High Angle of Attack (AOA alpha protection)
• Load Factor Limitation (+2.5 / -1.0)
• Pitch Attitude (30° UP/15° DN)
• Bank Angle (67°)

2

How does the High Speed Protection operate?

If VMO/MMO plus a predetermined factor is exceeded, the system induces a pitch-up input to limit aircraft speed

3

Can the pilot override High Speed Protection pitch-up?

No

4

What is Alpha Max?

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

5

How does High Angle of Attack Protection operate?

When the angle of attack exceeds α prot, pitch trim ceases and angle of attack is now proportional to sidestick deflection, not to exceed α max even with full aft sidestick deflection

6

What protections do you have in Alternate Law?

• Load Factor
• High speed stability
• Low speed stability

7

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

Yes

8

What protections do you have in Direct Law?

None

9

When the landing gear is extended, what happens to Alternate Law?

Degrades to Direct Law

10

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

• When in Direct Law
• When below 100 feet

11

How would you get into Abnormal Attitude Law?

By significantly exceeding the Normal Law limits

12

Can you stall the aircraft in Normal Law?

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

13

What is the purpose of Abnormal Attitude Law?

Allows the aircraft to be recovered from an unusual attitude

14

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

Abnormal Attitude Law

15

Will Abnormal Attitude Law revert to Direct Law on landing gear extension?

No

16

What PFD indications indicate Normal Law?

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

17

What is indicated if the PFD pitch and bank limits are amber X’s?

You are not in Normal Law

18

What would cause you to revert to another law?

Multiple failures of redundant systems

19

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

Normal Law, Ground Mode

20

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

Yes, with Mechanical Backup

21

How is the airplane controlled in Mechanical Backup?

• Pitch – Trim wheel (horizontal stabilizer)
• Yaw – Rudder pedals (rudder)
• Speed – Thrust levers