Multiple choice

What is the decision height for an aircraft fitted with CAT - II ILS?

  1. Not less than 900 feet

  2. Not less than 500 feet

  3. Not less than 300 feet

  4. Not less than 100 feet
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

ILS categories are defined by their decision height and runway visual range requirements. CAT-II allows approaches down to 100 feet decision height with RVR of 1200 feet. CAT-I requires 200 feet DH, CAT-III has even lower or no decision height limits depending on the subcategory. The 'not less than' means 100 feet is the minimum authorized DH.

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