Section 107.110 - Category 1 operationsTo conduct Category 1 operations-
(a) A remote pilot in command must use a small unmanned aircraft that-(1) Weighs 0.55 pounds or less on takeoff and throughout the duration of each operation under Category 1, including everything that is on board or otherwise attached to the aircraft; and(2) Does not contain any exposed rotating parts that would lacerate human skin upon impact with a human being.(b) No remote pilot in command may operate a small unmanned aircraft in sustained flight over open-air assemblies of human beings unless the operation meets the requirements of either § 89.110 or § 89.115(a) of this chapter.Amdt. No. 107-8, 86 FR 4382 , Jan. 15, 2021, as amended by 86 FR 62473 , Nov. 10, 2021 86 FR 4383, 3/16/2021; as amended by 86 FR 62473, 11/10/2021