What does the term "runway threshold" refer to?

The term "runway threshold" refers to the beginning portion of the runway that is available for landing. This is a critical area identified for aircraft to touch down during landing maneuvers. The runway threshold marks the point at which the runway officially begins for landing operations and is crucial for pilots during approach and landing phases, as it helps determine the appropriate altitude and speed for touchdown.

It is important to note that the threshold can be identified visually by markings on the runway, and it often corresponds to specific measurements as outlined in aviation regulations to ensure safe aircraft operations. The threshold is typically displaced in instances where obstacles may inhibit landing safety or for other operational reasons.

Understanding the concept of the runway threshold is vital for airport operations and helps ensure compliance with safety standards in aviation.