No person may operate an ultralight vehicle in areas designated in a Notice to Airmen under § 91.137, § 91.138, § 91.141, § 91.143 or § 91.145 of this chapter, unless authorized by:

1. (a) Air Traffic Control (ATC); or
2. (b) A Flight Standards Certificate of Waiver or Authorization issued for the demonstration or event.

[Docket FAA-2000-8274, 66 FR 47378, Sept. 11, 2001]