Practice question

In James Reason's Swiss Cheese Model of accident causation, what do the 'holes' in the defensive slices represent?

  1. The residual risk formally accepted after all mitigations in a safety risk assessment
  2. Latent conditions (system design flaws, organizational weaknesses) and active failures (errors/violations)
  3. Uncontrolled airspace sectors where ATC radar coverage is absent
  4. Periods when a defence is deliberately removed for scheduled maintenance or training

Answer: B — Latent conditions (system design flaws, organizational weaknesses) and active failures (errors/violations)

The correct answer is shown above. Try the full quiz for additional practice.

Practice more: SLCAA ATC Knowledge Test Practice Questions - Sierra Leone Civil Aviation Authority Air Traffic Controller Knowledge Test Exam →