In aerospace as in many other industries, nondestructive testing (NDT) is the final quality assessment, the final check of a part before it enters into service. Without a quality process and excellent technicians working diligently with a lot of integrity, the parts may just not be of the highest quality and fit for the job.

Nondestructive Testing (NDT) is the name given to the processes designed to verify the integrity of a structure in such a way that the performance of that component is not impaired by the test.