This document provides a basis for assessing and establishing operational, safety, performance, and interoperability requirements for UAS operations in the US National Airspace System (NAS). An Unmanned Aircraft System is an unmanned aircraft and its associated components and persons required for operation. The OSED encompasses:

• All current and planned UAS operations that may occur prior to 2025, except those intended to operate strictly within visual line of sight
• All UAS types that are in use or in the final stages of development
• All airspace and operating environments in the current NAS (as described in the FAA NAS Enterprise Architecture, September 2007) including airport surface and off-airport operations
• The operational performance and characteristics of UAS based on known values of existing systems