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Topic Description

This topic reviews the Airborne Collision Avoidance System (ACAS), which alerts the crew of possible conflicts with traffic by interrogating transponders in nearby aircraft. ACAS predicts the flight paths of potential intruders and future aircraft positions for advisory and resolution guidance.  

4 lessons

  • Part 1
  • Part 2
  • Part 3
  • Part 4

Topic Outline

  • ACAS/TCAS terms and concepts
  • Equipment requirements
  • ACAS surveillance thresholds and limitations
  • Conditions where the system is inhibited
  • ACAS cockpit controls
  • Display options and interpretations
  • Level off and reversal logic
  • ACAS failure procedures
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