The National Airpsace System (NAS) Enterprise Architecture (EA) consists of an integrated set of views and data at three distinct timeframes, i.e. the As-Is, the Mid-Term (To-Be), and the Far-Term (To-Be), each intended to represent the NAS at a particular point of time. The As-Is Depicts the NAS and how it exists today, while the Mid-Term and Far-Term (To-Be) states represent how the NAS should/could exist in the future. The As-Is perspective is extremely important in establishing a common basis for management and planning by providing input to gap and impact analysis and the configuration of the NAS. The To-Be perpectives are equally important providing a target for aligning current decisions, as well as the basis for long-term system and investment/program planning.
The architecture views and requirement statements are derived from the NAS Integrated Systems Engineering Framework (ISEF) and are accessible by clicking on the links below.