摘要: UAS do not carry a pilot on board, but instead operate on pre-programmed routes and by following commands from pilot-operated ground stations. UAS can be small, generally 55 pounds or less, or large. Current domestic uses include ... 展开 UAS do not carry a pilot on board, but instead operate on pre-programmed routes and by following commands from pilot-operated ground stations. UAS can be small, generally 55 pounds or less, or large. Current domestic uses include law enforcement, forest fire monitoring, border security, weather research, and scientific data collection. However, current uses are limited. FAA authorizes UAS operations on a case-by-case basis after conducting a safety review. FAA and the other federal agencies that have a role or interest in UAS are working to provide routine access for UAS into the national airspace system. As requested, this report discusses (1) the status of obstacles identified in GAO's 2008 report to integrate UAS into the national airspace system, (2) FAA's progress in meeting its congressional requirements for UAS, and (3) emerging issues. GAO reviewed and analyzed documents and interviewed relevant government, academic, and private-sector entities, as well as UAS users and civil liberties organizations. 收起