FLIGHT CONTROL LAWS Flashcards
What protection/s do you have in Normal Law?
a. Load Factor Limitation (Clean = +2.5 / -1.0; Dirty = +2.0 / 0)
b. Pitch Attitude (30° UP/15° DN)
c. Bank Angle (67°)
d. High Speed
e. High Angle of Attack (AOA alpha protection)
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
Can the pilot override the auto pitch-up associated with High Speed Protection in Normal Law?
No
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
How does High Angle of Attack Protection operate?
When the angle of attack exceeds Alpha Protection, pitch trim ceases and angle of attack is now proportional to sidestick
deflection, not to exceed Alpha Max even with full aft sidestick deflection
What protection do you have in Alternate Law?
a. Load Factor
b. High speed stability (Nose up command) but can be overridden
c. Low speed stability (Nose down command) but can be overridden
Can you override the high speed stability in Alternate Law?
Yes
What protections do you have in Direct Law?
None
If you are in Pitch Alternate Law, what law would Roll be?
Direct Law
When is there a direct relationship between sidestick and flight control surface deflection?
a. When in Normal Law, Ground Mode
b. When in Direct Law
c. When below 50 feet in Flare Mode (pitch only)
How would you get into Abnormal Attitude Law?
By exceeding approximately double the Normal Law limits
What is the purpose of Abnormal Attitude Law?
Allows the aircraft to be recovered from an unusual attitude
After recovery from an unusual attitude, what law will you be in?
Abnormal Attitude Law
Will Abnormal Law revert to Direct Law on landing gear extension?
No
What PFD indications indicate Normal Law?
a. Green = for pitch, bank, and overspeed limits
b. Amber/black (alpha protection) airspeed tape
