Radiography Non-Destructive testing involves passing radiation through the material being tested and onto film. Radiation hazards are present while deploying this method, so only highly trained professionals should attempt this level of testing. SEAL Aviation technicians are Florida State RSO certified to ensure all proper safety standards are being observed for your safety as well as the safety of our technicians. We use radiography to test and inspect composite parts for integrity, water intrusion and other defects. It’s used on metallic parts such as welds or castings to reveal corrosion, loose fittings/rivets, out of round holes and other defects.