Regulations last checked for updates: Dec 17, 2025

Title 14 - Aeronautics and Space last revised: Nov 03, 2025
All TitlesTitle 14Chapter IPart 103Subpart B - Subpart B—Operating Rules
View all text of Subpart B [§ 103.9 - § 103.23]
§ 103.21 - Visual reference with the surface.

No person may operate an ultralight vehicle except by visual reference with the surface.

authority: 49 U.S.C. 106(g), 40103-40104, 40113, 44701
source: Docket 21631, 47 FR 38776, Sept. 2, 1982, unless otherwise noted.
cite as: 14 CFR 103.21
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