Marginal weather requires which conditions to be present?

• A. Only destination minima
• B. Only alternate minima
• C. Both destination and alternate minima
• D. Neither

Answer: (C)

When weather is marginal, you plan for both the chance you can land at the destination and the possibility you’ll need to divert. That means the forecast must meet the published minimums for the destination for the intended approach, and you must also have an alternate airport whose weather meets its own minimums so you have a legal, usable place to land if the destination becomes unusable. Only checking one side leaves you without a guaranteed option if conditions change, which is why both sets of minima are required.