StacksVerified U.S. regulatory reference

14 CFR §25.531

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
For the wing and its attachment to the hull or main float—
  1. (a)The aerodynamic wing lift is assumed to be zero; and
  2. (b)A downward inertia load, corresponding to a load factor computed from the following formula, must be applied: