What is the minimum rank for NDI technicians in Navy and Marine Corps?

The minimum rank requirement for Non-Destructive Inspection (NDI) technicians in the Navy and Marine Corps is E-4. This rank indicates that personnel have achieved a level of experience and training appropriate for the responsibilities associated with NDI, which involves critical assessments of material integrity without causing damage.

At the E-4 level, technicians possess foundational knowledge and skills in NDI techniques, as well as an understanding of the equipment and methods used in inspections. Additionally, being an E-4 implies that individuals have completed the necessary training programs and have gained some experience in the field, which are essential for performing the specialized tasks associated with NDI.

The other ranks listed, while they represent various levels of experience within the Navy and Marine Corps, do not specifically align with the minimum requirements established for NDI technicians. E-3 represents a junior level, typically lacking the necessary technical training or experience. E-5 and E-6 indicate more advanced ranks with increased responsibility but are beyond the minimum requirement for starting as an NDI technician.