; and (C) in subsection (f)(1)(A)(i) by striking or chapter 451 and inserting chapter 451, or chapter 455 . (3) Clerical amendment The analysis for subtitle VII of title 49, United States Code, is amended by inserting after the item relating to chapter 453 the following: 455. Unmanned aircraft systems 45501 . 333. Unmanned aircraft test ranges (a) Extension of program Section 332(c)(1) of the FAA Modernization and Reform Act of 2012 ( 49 U.S.C. 40101 note) is amended by striking September 30, 2019 and inserting the date that is 6 years after the date of enactment of the FAA Reauthorization Act of 2018 . (b) Sense-and-Avoid and beyond line of sight systems at test ranges (1) In general To the extent consistent with aviation safety, the Administrator of the Federal Aviation Administration shall permit and encourage flights of unmanned aircraft equipped with sense-and-avoid and beyond line of sight systems at the 6 test ranges designated under section 332(c) of the FAA Modernization and Reform Act of 2012. (2) Waivers In carrying out paragraph (1), the Administrator may waive the requirements of section 44711 of title 49, United States Code, including related regulations, to the extent consistent with aviation safety. (c) Test range defined (1) In general In this section, the term test range means a defined geographic area where research and development are conducted as authorized by the Administrator of the Federal Aviation Administration. (2) Inclusions Such term includes any of the 6 test ranges established by the Administrator of the Federal Aviation Administration under section 332(c) of the FAA Modernization and Reform Act of 2012, as in effect on the day before the date of enactment of this subsection, and any public entity authorized by the Federal Aviation Administration as an unmanned aircraft system flight test center before January 1, 2009. 334. Sense of Congress regarding unmanned aircraft safety It is the sense of Congress that— (1) the unauthorized operation of unmanned aircraft near airports presents