; (2) whether reduced enforcement penalties increased the overall number of safety incidents that occurred; and (3) whether FAA enforcement staff registered complaints about reduced enforcement reducing compliance with safety regulations. B Unmanned Aircraft Systems 331. Definitions Except as otherwise provided, the definitions contained in section 45501 of title 49, United States Code (as added by this Act), shall apply to this subtitle. 332. Codification of existing law; additional provisions (a) In general Subtitle VII of title 49, United States Code, is amended by inserting after chapter 453 the following: 455 Unmanned Aircraft Systems 45501. Definitions. 45502. Integration of civil unmanned aircraft systems into national airspace system. 45503. Risk-based permitting of unmanned aircraft systems. 45504. Public unmanned aircraft systems. 45505. Special rules for certain unmanned aircraft systems. 45506. Certification of new air navigation facilities for unmanned aircraft and other aircraft. 45507. Special rules for certain UTM and low-altitude CNS. 45508. Operation of small unmanned aircraft. 45509. Exception for limited recreational operations of unmanned aircraft. 45510. Carriage of property for compensation or hire. 45511. Micro UAS operations. 45501. Definitions In this chapter, the following definitions apply: (1) Aerial data collection The term aerial data collection means the gathering of data by a device aboard an unmanned aircraft during flight, including imagery, sensing, and measurement by such device. (2) Arctic The term Arctic means the United States zone of the Chukchi Sea, Beaufort Sea, and Bering Sea north of the Aleutian chain. (3) Certificate of waiver