14 C.F.R. § 101.17 Lighting and marking requirements.
Title 14 - Aeronautics and Space
(a) No person may operate a moored balloon or kite, between sunset and sunrise unless the balloon or kite, and its mooring lines, are lighted so as to give a visual warning equal to that required for obstructions to air navigation in the FAA publication “Obstruction Marking and Lighting”. (b) No person may operate a moored balloon or kite between sunrise and sunset unless its mooring lines have colored pennants or streamers attached at not more than 50 foot intervals beginning at 150 feet above the surface of the earth and visible for at least one mile. (Sec. 6(c), Department of Transportation Act (49 U.S.C. 1655(c))) [Doc. No. 1580, 28 FR 6722, June 29, 1963, as amended by Amdt. 101–4, 39 FR 22252, June 21, 1974]
Title 14: Aeronautics and Space
PART 101—MOORED BALLOONS, KITES, UNMANNED ROCKETS AND UNMANNED FREE BALLOONS
Subpart B—Moored Balloons and Kites
§ 101.17 Lighting and marking requirements.