StacksVerified U.S. regulatory reference

14 CFR §25.751

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
Each main float must have—
  1. (a)A buoyancy of 80 percent in excess of that required to support the maximum weight of the seaplane or amphibian in fresh water; and
  2. (b)Not less than five watertight compartments approximately equal in volume.