AATT National Airspace System Operational Concept Description (Volume I)

Keywords aatt national airspace concept description national airspace system system operation
Standards groups

This Operational Concept Description (OCD) provides an evolutionary concept of operations for
the National Airspace System (NAS) and an overview of the proposed enhancements to future
NAS operations. The operational concept presented is built on the foundation of the 1997,
2000, 2001 and 2002 versions of the Advanced Air Transportation Technologies (AATT)
Operational Concept (References 1,2,3, and 4). It highlights the potential changes and
modifications to the NAS in a way that is easily identified by the reader. This document clearly
identifies the needed enhancements to the NAS and the applications/projects that are proposed
to partially achieve these enhancements.

This OCD documents the latest in an evolutionary path to analyze ATM requirements and
provide an integrated and cohesive framework for subsequent concept development and
assessment activities.

In Volume I, ten Enhancement Areas are defined based on the NAS service model used by the
Federal Aviation Administration (FAA). The operational concept for each of the ten
Enhancement Areas is presented and a set of applications in each Enhancement Area that are
planned by the National Aeronautics and Space Administration (NASA) and the FAA are

Date published
Document type
Concept Description
Defines standard
Replaced/Superseded by document(s)
Cancelled by
Amended by
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This report was developed from the referenced documents in order to conform to the required
contents of an Operational Concept Description (OCD) as jointly defined by National
Aeronautics and Space Administration (NASA) and the Federal Aviation Administration (FAA)
Free Flight Project Office. The majority of the descriptive material has been taken directly from
the referenced documents available at the time of publication. Modifications have been made to
add sections not in previous concept descriptions, to improve readability, and to reflect the most
currently available information.

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