14 C.F.R. § 23.757 Auxiliary floats.
Title 14 - Aeronautics and Space
Auxiliary floats must be arranged so that, when completely submerged in fresh water, they provide a righting moment of at least 1.5 times the upsetting moment caused by the seaplane or amphibian being tilted.
Title 14: Aeronautics and Space
PART 23—AIRWORTHINESS STANDARDS: NORMAL, UTILITY, ACROBATIC, AND COMMUTER CATEGORY AIRPLANES
Subpart D—Design and Construction
Floats and Hulls
§ 23.757 Auxiliary floats.
