The purpose of this DOA standard is to complement the DOA Standard ??prEN 9250 Aerospace series Test organisations General requirements for test process and capabilities?? applicable to the qualification of test organisations performing tests necessary to demonstrate compliance with the applicable type-certification basis@ ETSO and environmental protection requirements (i. e.: certification tests). This standard shall be used in conjunction with prEN 9250. It provides common means of compliance to EASA Part 21 DOA applicable requirements and/or Military equivalent applicable requirements (e. g.: EMAR 21) in: ?? identifying the relevant DOA requirements; ?? identifying necessary capabilities and providing guidance for assessment and surveillance; ?? describing the whole test process from test specification to retention of test data; ?? addressing the DOA requirements for each step of the process. The requirements of the present standard should be cascaded to the test organisation by the Design Organisation depending on the level of involvement of the test organisation. Each paragraph and clause of this standard refers to and complements when necessary the corresponding paragraph of ASD Standard prEN 9250. NOTE The definition of Design Organisation is given in paragraph 3 of ASD standard prEN 9250.