14 C.F.R. § 23.505 Supplementary conditions for skiplanes.
Title 14 - Aeronautics and Space
In determining ground loads for skiplanes, and assuming that the airplane is resting on the ground with one main ski frozen at rest and the other skis free to slide, a limit side force equal to 0.036 times the design maximum weight must be applied near the tail assembly, with a factor of safety of 1. [Amdt. 23–7, 34 FR 13090, Aug. 13, 1969]
Title 14: Aeronautics and Space
PART 23—AIRWORTHINESS STANDARDS: NORMAL, UTILITY, ACROBATIC, AND COMMUTER CATEGORY AIRPLANES
Subpart C—Structure
Ground Loads
§ 23.505 Supplementary conditions for skiplanes.