14 CFR 103.17 : Aeronautics And Space (§ 1.1 To Parts 1311-1399) — (§ 60.1 To Parts 108-109) — Federal Aviation Administration, Department Of Transportation (Continued) (§ 60.1 To Parts 108-109) — Air Traffic And General Operating Rules (§ 91.1 To Parts 108-109) — Ultralight Vehicles (§ 103.1 To § 103.23) — Operating Rules (§ 103.9 To § 103.23) — Operations in certain airspace.

4 Aug 2016

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.

14 CFR 103.17
[Amdt. 103-17, 56 FR 65662, Dec. 17, 1991]