Abstract
This paper defines the policy applied by Saab Military Aircraft for the damage tolerance verification of the JAS39 Gripen aircraft. The paramount feature of the Saab verification policy is that the verification test shall be carried out with series production parts correctly built into their adjacent structure. A consequence of this is that the Saab verification policy is dependence upon the characteristics of artificial flaws; time to initiation of a natural fatigue crack, and its dependence upon variations in the flaw-manufacturing process. Supporting research programmes have proved that the artificial flaw issue is no cause for concern. Finally, 12 completed damage tolerance verification tests on structural assemblies are briefly reviewed.
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