For preflight planning at an alternate, you must add to the published minimums for nonprecision approaches which value?

For preflight planning at an alternate, you must add to the published minimums for nonprecision approaches which value?

• A. 100-1/2
• B. 300-1
• C. 400-2
• D. 250-1

Answer: (B)

When planning an alternate, you apply alternate minimums by taking the published minimums for a nonprecision approach and adding 300 feet to the altitude and 1 mile to the visibility. This extra margin provides a safer buffer because nonprecision approaches lack vertical guidance, so the higher threshold helps ensure obstacle clearance and adequate visibility if you end up using the alternate. For example, a nonprecision minimum of 600 feet and 2 miles becomes 900 feet and 3 miles for alternate planning. The other options don’t reflect the standard nonprecision alternate adjustment and would misstate the required margin.

When planning an alternate, you apply alternate minimums by taking the published minimums for a nonprecision approach and adding 300 feet to the altitude and 1 mile to the visibility. This extra margin provides a safer buffer because nonprecision approaches lack vertical guidance, so the higher threshold helps ensure obstacle clearance and adequate visibility if you end up using the alternate. For example, a nonprecision minimum of 600 feet and 2 miles becomes 900 feet and 3 miles for alternate planning. The other options don’t reflect the standard nonprecision alternate adjustment and would misstate the required margin.