Non-destructive testing (NDT) is categorized as which maintenance type?

• A. Specialist Maintenance Tasks
• B. Routine Maintenance
• C. Line Maintenance
• D. Major Overhaul

Answer: (A)

Non-destructive testing is a specialized maintenance activity that requires unique skills, calibrated equipment, and documented procedures. It is used to detect flaws in materials or components without causing damage, and it typically involves trained personnel performing specific tests (like eddy current, ultrasonic, magnetic particle, dye penetrant, or radiography).

In maintenance types, routine maintenance covers regular, scheduled tasks such as lubrication and simple inspections. Line maintenance involves quick, on-the-spot tasks performed during normal operations at the airport. Major overhaul is an extensive, depot-level refurbishment. Because NDT hinges on specialized techniques and certification rather than routine checks or broad overhaul work, it fits under Specialist Maintenance Tasks.