14 C.F.R. § 294.86 Industrial/agricultural/other nontransport air operations prohibited.
Title 14 - Aeronautics and Space
A registrant shall not engage in flights for the purpose of industrial or agricultural operations (e.g., crop dusting, pest control, pipeline patrol, mapping, surveying, banner towing, skywriting, aerial photography) within the United States unless it has obtained a permit from the Department under part 375 of this chapter.
Title 14: Aeronautics and Space
PART 294—CANADIAN CHARTER AIR TAXI OPERATORS
Subpart I—Terms, Conditions, and Limitations of This Part
§ 294.86 Industrial/agricultural/other nontransport air operations prohibited.