Podcast
Questions and Answers
What triggers the engagement of the abnormal attitude law?
What triggers the engagement of the abnormal attitude law?
- Bank angle exceeds 90°
- Angle of attack below 30°
- Speed below 70 kt
- Pitch attitude above 50° nose up or 30° nose down (correct)
Which flight control laws are active when the abnormal attitude law engages?
Which flight control laws are active when the abnormal attitude law engages?
- Pitch direct law, roll normal law, yaw alternate law
- Pitch direct law, roll alternate law, yaw direct law
- Pitch mechanical law, roll alternate law, yaw normal law
- Pitch alternate law, roll direct law, yaw mechanical law (correct)
What indication is displayed on the PFDs when the abnormal attitude law is active?
What indication is displayed on the PFDs when the abnormal attitude law is active?
- USE AUTO TRIM
- USE ROLL TRIM
- USE PITCH ADC
- USE MAN PITCH TRIM (correct)
What happens to the yaw mechanical law when the abnormal attitude law is engaged?
What happens to the yaw mechanical law when the abnormal attitude law is engaged?
What occurs when the aircraft returns within the normal flight envelope after being in abnormal attitude law?
What occurs when the aircraft returns within the normal flight envelope after being in abnormal attitude law?
What law becomes active in the pitch configuration when the aircraft is back within the normal flight envelope? Being in abnormal attitude
What law becomes active in the pitch configuration when the aircraft is back within the normal flight envelope? Being in abnormal attitude
Which condition remains active for the entire duration of the flight after returning to the normal flight envelope? Being in abnormal attitude
Which condition remains active for the entire duration of the flight after returning to the normal flight envelope? Being in abnormal attitude
What is the display indication on the ECAM after the aircraft returns within the normal flight envelope? Being in abnormal attitude
What is the display indication on the ECAM after the aircraft returns within the normal flight envelope? Being in abnormal attitude
Which law is associated with yaw functionality after the aircraft regains normal flight conditions? Being in abnormal attitude
Which law is associated with yaw functionality after the aircraft regains normal flight conditions? Being in abnormal attitude
Which of the following laws is NOT active when the aircraft returns within the normal flight envelope? Being in abnormal attitude
Which of the following laws is NOT active when the aircraft returns within the normal flight envelope? Being in abnormal attitude
Flashcards
Abnormal Attitude Law
Abnormal Attitude Law
A flight control law that engages when the aircraft's attitude goes beyond normal limits.
Flight Envelope Limits
Flight Envelope Limits
Safe operating boundaries for aircraft concerning pitch, bank, angle of attack, speed (kt), and Mach number.
Abnormal Attitude Law Engagement
Abnormal Attitude Law Engagement
Conditions, such as exceeding 50° nose-up pitch or 125° bank; the law activates to manage extreme flight attitudes
Active Control Laws
Active Control Laws
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Post-Recovery Control Defaults
Post-Recovery Control Defaults
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Pitch Alternate Law
Pitch Alternate Law
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Roll Direct Law
Roll Direct Law
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Yaw Alternate Law
Yaw Alternate Law
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F/CTL ALTN LAW
F/CTL ALTN LAW
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Autotrim
Autotrim
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Study Notes
Aircraft Flight Control Laws
- Extreme attitudes trigger a modified flight control law, the "abnormal attitude law".
- This law prioritizes pilot recovery of normal flight conditions.
- The abnormal attitude law activates when specific parameters exceed limits:
- Pitch attitude above 50° nose up or 30° nose down
- Bank angle above 125°
- Angle of attack above 40°
- Airspeed above 440 knots or below 60 knots
- Mach number above 0.96 or below 0.1.
- When the law activates:
- Pitch "alternate law" is used.
- Roll "direct law" is used.
- Yaw "mechanical law" is used.
- Autotrim is deactivated.
- "USE MAN PITCH TRIM" is displayed on the primary flight display (PFD).
- "F/CTL ALTN LAW" is displayed on the electronic centralized aircraft monitor (ECAM).
- When the aircraft returns to normal flight envelope, the abnormal attitude law disengages, restoring:
- Pitch "alternate law" with autotrim.
- Roll "direct law".
- Yaw "alternate law".
- "F/CTL ALTN LAW" remains visible on the ECAM.
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