What does 0-0 indicate in weather minimums?

What does 0-0 indicate in weather minimums?

• A. Zero ceiling and zero visibility
• B. Zero ceiling and one mile visibility
• C. One thousand foot ceiling and zero visibility
• D. No ceilings but visibility present

Answer: (A)

Weather minimums tell you the least amount of cloud and the least visibility required to fly a procedure under instrument conditions. They’re shown as two numbers separated by a dash: the first is the ceiling (how low the clouds must be, in feet), and the second is the visibility (in miles). When both numbers are zero, it means there are no usable instrument minimums for that procedure; you would not be able to rely on that instrument approach in any instrument weather. In practice, this indicates the approach cannot be used in instrument conditions and you’d need visual flight rules or another procedure with higher minimums.

Weather minimums tell you the least amount of cloud and the least visibility required to fly a procedure under instrument conditions. They’re shown as two numbers separated by a dash: the first is the ceiling (how low the clouds must be, in feet), and the second is the visibility (in miles). When both numbers are zero, it means there are no usable instrument minimums for that procedure; you would not be able to rely on that instrument approach in any instrument weather. In practice, this indicates the approach cannot be used in instrument conditions and you’d need visual flight rules or another procedure with higher minimums.