What does the 600 ft ceiling and 2 SM visibility generally refer to in marginal weather discussions?

What does the 600 ft ceiling and 2 SM visibility generally refer to in marginal weather discussions?

• A. It is the marginal weather threshold for requiring a second alternate.
• B. It is the standard VFR minimum for uncontrolled fields.
• C. It is the IFR minimum for the destination.
• D. It is the recommended cruising altitude.

Answer: (A)

In marginal weather planning, the numbers 600 ft ceiling and 2 statute miles of visibility are used as the threshold that triggers the need for an additional backup. If forecast weather at the destination (or the primary alternate) is equal to or worse than this level, you typically must plan for a second alternate airport. It’s about ensuring a reliable alternates strategy during IFR planning, not about basic VFR minimums, IFR minimums for the destination, or choosing a cruising altitude.

In marginal weather planning, the numbers 600 ft ceiling and 2 statute miles of visibility are used as the threshold that triggers the need for an additional backup. If forecast weather at the destination (or the primary alternate) is equal to or worse than this level, you typically must plan for a second alternate airport. It’s about ensuring a reliable alternates strategy during IFR planning, not about basic VFR minimums, IFR minimums for the destination, or choosing a cruising altitude.