Airbus Flight Instructor
Airbus · Knowledge Base
Flight Controls
- Overview — Fly-by-Wire Architecture, the Computers, and the Four Control Laws
- EFCS Computers — PRIM, SEC, BCM and the Reconfiguration Chains
- Control Inputs and Power Supply — Sidesticks, the Sensor Suite, and the Battery-Backed Computers
- Actuation Control and Monitoring — Active, Damping, Centering and the Fail-Safe Default
- FCDC and Interfaces — the Data Bridge to the PFD, SD, Warnings and Recorder
- Normal Law and Pitch — Ground, Flight, Flare Modes and Load-Factor Demand
- High-AOA Protection — Alpha Prot to Alpha Max and Stick-as-AOA-Demand
- Alpha Floor and TOGA Lock — the Automatic Thrust Protection
- High-Speed Protection — Nose-Up Bias, Spiral Stability to Wings Level
- Pitch Attitude and Load Factor — the Envelope Brackets
- Lateral Normal Law — Bank Angle Protection, Sideslip Target, Turn Coordination
- Load Alleviation — MLA, ELAF, Turbulence Damping and Trimming
- Alternate Law — Protections Become Stabilities, ALT 1 vs ALT 2
- Direct Law — Stick to Surface, Manual Trim, No Protections
- Abnormal Attitude Law — the Upset-Recovery Law and Why It Doesn't Reset to Normal
- Mechanical Backup and the BCM — Pitch by Trim Wheel, Yaw by Backup Module
- Sidestick Priority — Dual Input, the Takeover Button and the Lights
- Law Reconfiguration — the Degradation Map from Normal to Mechanical
- Ailerons — Inboard/Outboard, High-Speed Lockout and Droop
- Elevators — Two Surfaces on the THS, Centering Mode, Green-First Reconfiguration
- Rudder and Yaw — Fly-by-Wire, Three Active Servos, PFTU and the BCM Backup
- THS — the Ball-Screw Trim Surface, Electrical Auto-Trim and Mechanical Override
- Spoilers (1) — Roll Assist and Speedbrake, the Summed Surfaces
- Spoilers (2) — Ground Spoilers, the Extension Logic and Function Allocation
- Electrical Backup (BCM/BPS) — the Rudder's Self-Powered Last Resort
- High Lift — Architecture, Configurations and the SFCC/PCU System
- Flaps — Two per Wing, the Differential-Gearbox PCU and Half-Speed/Full-Torque
- Slats — Seven per Wing, Blue+Green, Two Actuators Each
- ARS and FLRS — the Two Automatic Flap-Overspeed Protections
- Slat Alpha/Speed Lock — Keeping the Slats Out When Slow
- High-Lift Faults — WTB, Asymmetry, Runaway and Disconnect
- Controls and Indicators — Pedestal, PFD, F/CTL Page and the Memos