StacksVerified U.S. regulatory reference

14 CFR §103.17

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
No person may operate an ultralight vehicle within Class A, Class B, Class C, or Class D airspace or within the lateral boundaries of the surface area of Class E airspace designated for an airport unless that person has prior authorization from the ATC facility having jurisdiction over that airspace.