Which minimums option is correct for high mins captain's alternate minimums?

Which minimums option is correct for high mins captain's alternate minimums?

• A. 600 feet / 2 miles
• B. 300 feet / 1 mile or published minimums, whichever is higher
• C. 300 feet / 1/2 mile or published minimums, whichever is higher
• D. 200 feet / 1 mile

Answer: (B)

The concept is how an alternate’s weather minimums are determined for planning. For a high-mins operation, you use the higher of two values: the company’s designated alternate minimums (in this case 300 feet of ceiling and 1 mile of visibility) and the published instrument-approach minimums for the alternate airport. You must plan to have weather at or above whichever is higher. If the airport’s published minimums are higher than 300/1, you use those; otherwise, 300/1 applies. This ensures the alternate is truly usable under the crew’s higher decision criteria. That’s why the correct choice is 300 feet / 1 mile or published minimums, whichever is higher.

The concept is how an alternate’s weather minimums are determined for planning. For a high-mins operation, you use the higher of two values: the company’s designated alternate minimums (in this case 300 feet of ceiling and 1 mile of visibility) and the published instrument-approach minimums for the alternate airport. You must plan to have weather at or above whichever is higher. If the airport’s published minimums are higher than 300/1, you use those; otherwise, 300/1 applies. This ensures the alternate is truly usable under the crew’s higher decision criteria. That’s why the correct choice is 300 feet / 1 mile or published minimums, whichever is higher.