Two white flashes and one green flash from an airport beacon indicate what type of airport?

The indication of two white flashes followed by one green flash from an airport beacon specifically designates a military airport. This signaling system is part of the standardized color and flashing pattern used in aviation to provide information about different types of airports to pilots.

In this case, the two white flashes represent military designations within the beacon's signaling pattern. Other types of airports have distinct signaling characteristics; for example, a lighted private airport might display a different pattern, and lighted water airports or public use airports have their own respective signals. By understanding these signaling conventions, pilots can quickly ascertain what type of airport they are approaching, thereby enhancing safety and awareness during flight operations.