§23.531 (Hull and main float takeoff condition.)

[For the wing and its attachment to the hull or main float-- (a) The aerodynamic wing lift is assumed to be zero; and (b) A downward inertia load, corresponding to a load factor computed from the following formula, must be applied: where-- n = inertia load factor; CTO = empirical seaplane operations factor equal to 0.004; = seaplane stalling speed (knots) at the design takeoff weight with the flaps extended in the appropriate takeoff position; = angle of dead rise at the main step (degrees); and W = design water takeoff weight in pounds.]