Text in force at CS29-12: from CS29-0, effective 14 Nov 2003.
Water-based and amphibian rotorcraft. The hull and auxiliary floats, if used, must have enough watertight compartments so that, with any single compartment of the hull or auxiliary floats flooded, the buoy ancy of the hull and auxiliary floats, and wheel tyres if used, provides a m argin of positive water stability great enough to m inimise the probability of capsizing the rotorcraft for the worst combination of wave heights and surface winds for which approval is desired.
ED Decision 2003/016/RM · Source