What program can detect defects with a high degree of accuracy without adversely affecting the part or system?

The Non-Destructive Inspection (NDI) Program is designed specifically to detect defects in materials and components without causing any damage to the part or system being inspected. This approach is critical in various fields, especially in aviation and military operations, where maintaining the integrity of equipment is paramount for safety and functionality.

NDI employs various techniques such as ultrasonic testing, radiographic testing, magnetic particle testing, and dye penetrant testing. These methods allow inspectors to identify internal and surface flaws while ensuring that the item remains intact and usable after inspection. This capability is invaluable in preventing failures that could arise from undetected flaws, thus enhancing operational safety and reliability.

In contrast, the other options, such as the Quality Assurance Program, Safety Inspection Program, and Preventive Maintenance Program, serve different purposes. While they may incorporate elements of inspection and quality checks, they do not have the specialize focus on detecting defects without causing damage that characterizes the NDI Program. As a result, NDI stands out as the most suitable answer for the question regarding non-destructive defect detection.