14 C.F.R. § 1221.106 Establishment of the NASA Flag.
Title 14 - Aeronautics and Space
The NASA Flags for interior and exterior use were created by the NASA Administrator in January 1960. Complete design, size, and color of the NASA interior and exterior flags for manufacturing purposes are detailed in U.S. Army QMG Drawing 5–1–269, revision September 14, 1960. The NASA Flags shall be used as set forth in §1221.113.
Title 14: Aeronautics and Space
PART 1221—THE NASA SEAL AND OTHER DEVICES, AND THE CONGRESSIONAL SPACE MEDAL OF HONOR
Subpart 1221.1—NASA Seal, NASA Insignia, NASA Logotype, NASA Program Identifiers, NASA Flags, and the Agency's Unified Visual Communications System
§ 1221.106 Establishment of the NASA Flag.

