MIL-STD-1540D
Test requirements shall be established for design, performance and manufacturing verification (qualification) and for product verification (acceptance). A combination of test methods at levels of product assembly ranging from units through the assembled vehicle shall be selected to prove design margins, validate manufacturing processes and verify that products are free of latent defects. The selected methods shall be capable of identifying all marginal aspects of the design
and of the manufacturing process. The test plan for a program should be designed to:
a. Identify and correct problems at the lowest level of assembly.
b. Prevent any problems from causing a failure in flight hardware at higher levels of assembly and with the highest assurance of no failure after launch.
5.6 Preparation for Verification Activities.
5.6.1 Preparation for Analysis. For those requirements where analysis is identified as the primary or supplementary method for verification, additional tools, models, software, or databases may be required. These items need to be developed, verified, and made available to meet the needs of the analysis. In some cases the analysis results provide an input to another verification method, such as a test. In those cases, the analysis needs to be scheduled such that the results are available when needed.
5.6.2 Preparation for Test Activities. The test activities and procedures shall be documented in sufficient detail to provide a framework for identifying and interrelating all of the individual tests and test procedures needed to complete the verification process. These activities and procedures shall as a minimum include the qualification (design verification) and acceptance (product verification) test requirements. A general description of each test planned, the conditions of the tests, and the pass-fail criteria shall be documented. The tests should be based upon a function-by-function mission analysis and any specified testing
requirements. Test objectives shall be planned to verify compliance with the design and specified performance requirement of the items involved, including interfaces. The overall schedule of tests shall be prepared showing compatibility with program schedules including the availability of test articles, test facilities, special test equipment, and procedures.
5.6.3 Preparation for Inspections. Tools and methods shall be developed to conduct all required inspections. A general description of each planned inspection, and the pass-fail criteria shall be documented.
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