You can legally file to a destination having forecast weather of ______ +/- 1 hour of your ETA?

You can legally file to a destination having forecast weather of ______ +/- 1 hour of your ETA?

• A. 0-0
• B. 0-1
• C. 1-1
• D. 2-2

Answer: (A)

Forecast weather used for filing must be valid exactly at your arrival time. The best choice means you’re basing your destination’s weather on the forecast that is current for the exact ETA, not for a window around it. Weather can shift in minutes, so using data that’s valid only within a broader range (like a window around ETA) could lead to arriving into conditions you didn’t plan for. By requiring weather that is valid at the precise arrival time, you ensure the plan matches the reality you’ll encounter when you land.

Forecast weather used for filing must be valid exactly at your arrival time. The best choice means you’re basing your destination’s weather on the forecast that is current for the exact ETA, not for a window around it. Weather can shift in minutes, so using data that’s valid only within a broader range (like a window around ETA) could lead to arriving into conditions you didn’t plan for. By requiring weather that is valid at the precise arrival time, you ensure the plan matches the reality you’ll encounter when you land.