; (2) less than 200 feet above the ground; (3) within class G airspace; and (4) at least 5 statute miles from the geographic center of a tower-controller airport or airport denoted on a current aeronautical chart published by the Federal Aviation Administration, except that an actively tethered public unmanned aircraft system may be operated closer than 5 statute miles to the airport if— (A) the operator of the actively tethered public unmanned aircraft system provides prior notice to the airport operator and receives, for a tower-controlled airport, prior approval from the air traffic control facilitate located at the airport; or (B) the exigent circumstances of an emergency prevent the giving of notice contemplated by clause (i) and the actively tethered public unmanned aircraft system is operated outside the flight path of any manned aircraft. (c) Definition of actively tethered public unmanned aircraft system The term actively tethered public unmanned aircraft system means public unmanned aircraft system in which the unmanned aircraft component— (1) weighs 4.4 pounds or less, including payload; (2) is physically attached to a ground station with a taut, appropriately load-rated tether that provides continuous power to the unmanned aircraft