CS-VLA 723 Shock absorption tests
ED Decision 2003/18/RM
(a) It must be shown that the limit load factors selected for design in accordance with CS-VLA 473 will not be exceeded. This must be shown by energy absorption tests except that analysis may be used for
(1) Increases in previously approved take-off and landing weights,
(2) Landing gears previously approved wheel type aeroplanes with similar weights and performances
(3) Landing gears using a steel or composite material spring or any other energy absorption element where the shock absorption characteristics are not essentially affected by the rate of compression or tension,
(4) Landing gears for which adequate experience and substantiating data are available.
(b) The landing gear may not fail, but may yield, in a test showing its reserved energy absorption capacity, simulating a descent velocity of 1.2 times the limit descent velocity, assuming wing lift equal to the weight of the aeroplane. The test may be replaced by an analysis in the same cases as sub-paragraphs (a)(1) to (a)(4) of this paragraph.
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