§25.531 Hull and main float takeoff conditions.

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; = empirical seaplane operations factor equal to 0.004; = seaplane stalling speed [(knots)] at the design takeoff weight within 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.]