14 CFR · Part 23

14 CFR § 23.2310

Buoyancy for seaplanes and amphibians.

Airplanes intended for operations on water, must—

(a)

Provide buoyancy of 80 percent in excess of the buoyancy required to support the maximum weight of the airplane in fresh water; and

(b)

Have sufficient margin so the airplane will stay afloat at rest in calm water without capsizing in case of a likely float or hull flooding.

Reflects the eCFR edition current as of September 29, 2026. Retrieved from ecfr.gov on October 16, 2026.

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