14 C.F.R. § 25.527 Hull and main float load factors.
Title 14 - Aeronautics and Space
(a) Water reaction load factors n (1) For the step landing case (2) For the bow and stern landing cases (b) The following values are used: (1) n (2) C1=empirical seaplane operations factor equal to 0.012 (except that this factor may not be less than that necessary to obtain the minimum value of step load factor of 2.33). (3) V (4) β=angle of dead rise at the longitudinal station at which the load factor is being determined in accordance with figure 1 of appendix B. (5) W= seaplane design landing weight in pounds. (6) K1=empirical hull station weighing factor, in accordance with figure 2 of appendix B. (7) r (c) For a twin float seaplane, because of the effect of flexibility of the attachment of the floats to the seaplane, the factor K1 may be reduced at the bow and stern to 0.8 of the value shown in figure 2 of appendix B. This reduction applies only to the design of the carrythrough and seaplane structure. [Doc. No. 5066, 29 FR 18291, Dec. 24, 1964, as amended by Amdt. 25–23, 35 FR 5673, Apr. 8, 1970]
Title 14: Aeronautics and Space
PART 25—AIRWORTHINESS STANDARDS: TRANSPORT CATEGORY AIRPLANES
Subpart C—Structure
Water Loads
§ 25.527 Hull and main float load factors.