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Module 13 — Aircraft Aerodynamics, Structures and Systems

13.3(b) — Autothrottle and Automatic Landing Systems

Practice questions test what you know. This note teaches what you don’t.

Question banks train recall. The questions that decide a pass are the borderline ones, where two answers look right — and those are won by understanding. That is what this note is written for.

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This section covers the autothrottle system (which controls engine thrust automatically) and automatic landing systems that enable landing in very low visibility conditions. These are safety-critical systems with stringent integrity requirements. The two subjects belong together for a regulatory reason as well as a technical one: an aeroplane can only be certificated for automatic landing if an autothrottle is fitted and serviceable. Automatic thrust control during the approach, flare and touchdown is mandatory, not optional, because the flare depends on …

6 sections 1 worked example 4 key formulas 5 tables 2 tips 2 warnings

110 exam-style questions in our bank test this topic. This note teaches the theory behind every one of them.

What you will learn

  1. Autothrottle (A/T) System
  2. Approach Mode — ILS Coupling
  3. Autoland Systems
  4. Autoland Alerting and Monitoring Systems
  5. Go-Around Mode
  6. Wind Shear Detection and Recovery
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