What current weather changes must be forwarded to the appropriate control facility?

What current weather changes must be forwarded to the appropriate control facility?

• A. Ceilings below 1,000 feet
• B. Visibilities at or above 4 miles
• C. Ceilings at or above 2,000 feet
• D. Visibility changes of 4 miles or more

Answer: (A)

The key idea is that changes in weather that reduce the usable airspace or worsen flight conditions must be shared with the controlling facility so traffic flow and safety decisions can be updated promptly. When ceilings fall below 1,000 feet, the amount of airspace available for visual flight is significantly reduced and many operations become IFR or require different procedures. This deterioration directly impacts how aircraft are sequenced, routed, and cleared, so it’s the change that must be forwarded to the appropriate control facility. Higher ceilings or greater visibility don’t impose the same immediate operational constraint, so they aren’t required to be forwarded in this context. Similarly, a large increase in visibility or ceiling doesn’t create the same need for immediate coordination as a drop below 1,000 feet.

The key idea is that changes in weather that reduce the usable airspace or worsen flight conditions must be shared with the controlling facility so traffic flow and safety decisions can be updated promptly. When ceilings fall below 1,000 feet, the amount of airspace available for visual flight is significantly reduced and many operations become IFR or require different procedures. This deterioration directly impacts how aircraft are sequenced, routed, and cleared, so it’s the change that must be forwarded to the appropriate control facility.

Higher ceilings or greater visibility don’t impose the same immediate operational constraint, so they aren’t required to be forwarded in this context. Similarly, a large increase in visibility or ceiling doesn’t create the same need for immediate coordination as a drop below 1,000 feet.