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CS 27.521 Float landing conditions
Available versions for ERULES-1963177438-4917
ED Decision 2003/15/RM
found in: CS-27 Amdt 9 - Small Rotorcraft (Dec 2021)
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CS 27.521 Float landing conditions ED Decision 2003/15/RM If certification for float operation is requested, the rotorcraft, with floats, must be designed to withstand the following loading conditions (where the limit load factor is determined under [CS 27.473(b)](#_DxCrossRefBm472493290) or assumed to be equal to that determined for wheel landing gear): (a) Up-load conditions in which: (1) A load is applied so that, with the rotorcraft in the static level attitude, the resultant water reaction passes vertically through the centre of gravity; and (2) The vertical load prescribed in sub-paragraph (a)(1) is applied simultaneously with an aft component of 0.25 times the vertical component. (b) A side-load condition in which: (1) A vertical load of 0.75 times the total vertical load specified in sub-paragraph (a)(1) is divided equally among the floats; and (2) For each float, the load share determined under sub-paragraph (b)(1), combined with a total sideload of 0.25 times the total vertical load specified in sub-paragraph (b)(1), is applied to the float only.
CS 27.521 Float landing conditions ED Decision 2003/15/RM If certification for float operation is requested, the rotorcraft, with floats, must be designed to withstand the following loading conditions (where the limit load factor is determined under [CS 27.473(b)](#_DxCrossRefBm8893859) or assumed to be equal to that determined for wheel landing gear): (a) Up-load conditions in which: (1) A load is applied so that, with the rotorcraft in the static level attitude, the resultant water reaction passes vertically through the centre of gravity; and (2) The vertical load prescribed in sub-paragraph (a)(1) is applied simultaneously with an aft component of 0.25 times the vertical component. (b) A side-load condition in which: (1) A vertical load of 0.75 times the total vertical load specified in sub-paragraph (a)(1) is divided equally among the floats; and (2) For each float, the load share determined under sub-paragraph (b)(1), combined with a total sideload of 0.25 times the total vertical load specified in sub-paragraph (b)(1), is applied to the float only.