Text in force at CS27-10: from CS27-0, effective 14 Nov 2003.
(a) The structure must be able to support limit loads without detrimental or permanent deformation. At any load up to limit loads, the deformation may not interfere with safe operation.
(b) The structure must be able to support ultimate loads without failure. This must be shown by:
(1) Applying ultimate loads to the structure in a static test for at least 3 seconds; or
(2) Dynamic tests simulating actual load application.
ED Decision 2003/015/RM · Source