What is the minimum required visibility for a CAT II approach in ILS?

What is the minimum required visibility for a CAT II approach in ILS?

• A. 700 feet
• B. 1800 feet
• C. 1200 feet
• D. 2400 feet

Answer: (C)

For a Category II (CAT II) Instrument Landing System (ILS) approach, the minimum required visibility is indeed 1200 feet. This category of approach allows for operations with lower decision heights and visibility conditions compared to higher categories. Specifically, CAT II approaches typically have a decision height as low as 100 feet above ground level with the requirement of at least 1200 feet of runway visual range (RVR). This level of visibility is essential to ensure that pilots can see the runway and make safe landing decisions under marginal weather conditions. Categories of ILS approaches are defined based on the visibility and decision height requirements, and for CAT II operations, 1200 feet represents a critical threshold ensuring that pilots have adequate visual references during the landing phase. Understanding these specific criteria helps pilots ensure compliance with aviation regulations and enhances safety during low visibility operations.

For a Category II (CAT II) Instrument Landing System (ILS) approach, the minimum required visibility is indeed 1200 feet. This category of approach allows for operations with lower decision heights and visibility conditions compared to higher categories. Specifically, CAT II approaches typically have a decision height as low as 100 feet above ground level with the requirement of at least 1200 feet of runway visual range (RVR). This level of visibility is essential to ensure that pilots can see the runway and make safe landing decisions under marginal weather conditions.

Categories of ILS approaches are defined based on the visibility and decision height requirements, and for CAT II operations, 1200 feet represents a critical threshold ensuring that pilots have adequate visual references during the landing phase. Understanding these specific criteria helps pilots ensure compliance with aviation regulations and enhances safety during low visibility operations.