What is the landing requirement for a dry runway?

The landing requirement for a dry runway being 60% of the runway length is based on established operational safety standards which account for factors such as aircraft type, weight, and performance characteristics.

In general aviation operations, pilots and dispatchers are trained to understand that a runway's effective landing distance can significantly vary based on conditions. For dry runways, a margin of safety is often built into the calculations, allowing for an effective landing distance that is often less than the full runway length. Using 60% as the threshold ensures that pilots have adequate space to decelerate and stop safely while also considering possible variances in performance.

This standard helps mitigate risks associated with various variables, including pilot error, environmental conditions, and aircraft performance limitations. It recognizes that while a full runway may be available, operational guidelines suggest that utilizing only a portion of it for landing, particularly under stable, dry conditions, is sufficient to ensure safe landing operations.

This concept is crucial for flight planning and dispatch operations, ensuring that all aircraft operate within safe and efficient parameters.