How many types of land are specifically categorized as on-airport?

On-airport land is typically categorized into two distinct types: airside and landside.

Airside refers to the areas of the airport that are accessible only to authorized personnel and aircraft. This includes runways, taxiways, and aircraft parking spots. The airside facilities are critical for the operational aspect of an airport, ensuring that aircraft can take off, land, and maneuver safely.

Landside, on the other hand, includes all areas accessible to passengers and the general public, such as terminals, parking lots, and road access areas. The landside plays a vital role in passenger processing and services, as it encompasses check-in, baggage claim, and access to ground transportation.

These two categories encompass all functions necessary for the airport's operation, thereby allowing for a comprehensive understanding of how the land at an airport is utilized. Thus, recognizing these two types is essential for understanding airport layout and operations.