When must the current touchdown RVR be issued to departing aircraft?

• A. When it exceeds 6000 feet
• B. When it is less than 6000 feet
• C. When visibility is low
• D. When the weather is changing

Answer: (B)

The requirement to issue the current touchdown Runway Visual Range (RVR) to departing aircraft is crucial for ensuring safety during takeoff operations, especially in conditions where visibility may be limited. The correct response indicates that the touchdown RVR must be communicated when it is less than 6000 feet.

This standard is in place because an RVR below 6000 feet can significantly impact a pilot's decision-making and flight safety. When visibility is restricted, pilots need up-to-date information to determine whether they can take off safely. The RVR measurement provides a quantitative assessment of visibility along the runway, allowing for better risk assessment and operational decision-making.

In contrast, if the RVR were above 6000 feet, the need for such an issuance diminishes since it generally indicates that visibility is sufficient for safe takeoff operations. Other choices, related to low visibility or changing weather, are relevant considerations but do not specifically mandate the issuance of the RVR unless it falls below the threshold established.