14 C.F.R. § 23.239 Spray characteristics.
Title 14 - Aeronautics and Space
Spray may not dangerously obscure the vision of the pilots or damage the propellers or other parts of a seaplane or amphibian at any time during taxiing, takeoff, and landing.
Title 14: Aeronautics and Space
PART 23—AIRWORTHINESS STANDARDS: NORMAL, UTILITY, ACROBATIC, AND COMMUTER CATEGORY AIRPLANES
Subpart B—Flight
Ground and Water Handling Characteristics
§ 23.239 Spray characteristics.
