Podcast
Questions and Answers
What triggers the engagement of the abnormal attitude law?
What triggers the engagement of the abnormal attitude law?
Which flight control laws are active when the abnormal attitude law engages?
Which flight control laws are active when the abnormal attitude law engages?
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?
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?
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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?
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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
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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
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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
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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
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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
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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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Description
This quiz focuses on the principles of aircraft flight control laws, especially the abnormal attitude law and its activation parameters. Test your knowledge on how these laws help pilots regain control in extreme flight conditions. Understand the specific actions taken by the flight control laws during abnormal situations and the restoration to normal conditions.