The Federal Aviation Administration (FAA) has adopted specific rules to allow the operation of civil small unmanned aircraft systems (small UAS) in the National Airspace System (NAS) for purposes other than hobby and recreation. The rules are specified in Title 14 of the Code of Federal Regulations (14 CFR) part 107, Small Unmanned Aircraft Systems. 14 CFR part 107 addresses small UAS classification, certification, and operating rules.