Under 14 CFR § 107.125(b), may a Category 3 operation be conducted over an open-air assembly of human beings, even within a closed- or restricted-access site?

Why: 14 CFR § 107.125(b) bars Category 3 operations over open-air assemblies of human beings outright. AC 107-2A § 8.3.6.4, p. 8-5, confirms this bar applies independent of whether the site restricts access.

• Notice satisfies the closed- or restricted-access-site condition in § 107.125(c)(1) for non-assembled individuals, but it does not override the separate, absolute open-air-assembly prohibition in § 107.125(b).
• No headcount threshold exists in the rule or AC; AC § 8.3.6.4 describes "open-air assembly" as a case-by-case density and context determination, not a numeric cutoff.