Sec. 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; C V β=angle of dead rise at the main step (degrees); and W=design water takeoff weight in pounds.
