Text in force at CAR3-14: from CAR3-0, effective 1 Nov 1949. OCR text
(a) The vertical component of the limit load factor shall be 4.2 except that it need not exceed a value given by the following formula: n = 3.0 + 0.133 W/S (b) The propeller axis (or equivalent reference line) shall be assumed to be horizontal and the resultant water reaction to be acting in the plane of symmetry and passing through the center of gravity of the airplane, but inclined so that its horizontal component is equal to one fourth of its vertical component. Inertia forces shall be assumed to act in a direction parallel to the water reaction. (c) Factors of safety. For the design of float attachment members, including the members necessary to complete a rigid brace truss through the fuselage, the factor of safety shall be 1.85. For the remaining structural members, the factor of safety shall be 1.5.