Define low-visibility landing for a jet.

• A. Less than 3/4 mile (4000 RVR)
• B. Less than 1/2 mile (2000 RVR)
• C. Less than 1 mile (6000 RVR)
• D. Less than 1 1/4 mile (5000 RVR)

Answer: (A)

Low-visibility landing is defined by how far a pilot can see along the runway, measured as Runway Visual Range (RVR). When the RVR drops to about 4000 feet, which is roughly 0.75 mile, the conditions are considered low visibility for landing. Under these conditions a jet would rely on instrument flight procedures and approach minimums (such as ILS or other precision approaches) rather than visual cues from the runway environment.

So the statement that describes less than 3/4 mile (4000 RVR) captures the standard threshold used to classify a landing as low visibility. The other options set different thresholds that aren’t the commonly used cutoff for this definition.