What is the first consideration in runway design?

The first consideration in runway design is the largest aircraft to be accommodated. This is because the dimensions and structural requirements of a runway are primarily dictated by the characteristics of the largest aircraft that will use it.

Designing a runway for the largest aircraft ensures that the facility can handle the most demanding operational requirements, such as weight, wingspan, and takeoff and landing performance. It also takes into account safety measures, such as the required length for takeoff and landing distances that vary according to the size and performance of these aircraft.

While the most common or smallest aircraft also play a role in the overall design and operational efficiency of an airport, prioritizing the largest aircraft ensures that the infrastructure is robust enough to support all aircraft types safely. This approach helps in avoiding potential operational limitations and enables the airport to accommodate future increases in aircraft size within the aviation industry.