What effect does a wider-than-usual runway have on an approach?

A wider-than-usual runway can indeed create the illusion of being lower than usual during an approach. This phenomenon occurs due to the way pilots perceive their environment while landing. When the runway is wider than expected, it can make the pilot feel as though they are at a higher altitude than they actually are. This is because the expanded width tends to distort spatial orientation, leading to a perception that the aircraft is at a lower altitude relative to the runway. As a result, pilots may instinctively aim for a lower approach path, which can affect landing stability and height.

Understanding this visual illusion is crucial for flight training and safety; it emphasizes the importance of relying on instruments and maintaining a consistent glide slope, regardless of runway appearance. Recognizing that a wider runway might lead to such a perception helps in making the necessary adjustments to maintain a safe and proper approach, thereby enhancing overall flight safety.