DIN 7990, a German standard published in 2020, outlines the requirements for the qualification of welding personnel in the aerospace industry. This standard ensures that welding personnel possess the necessary skills, knowledge, and experience to produce high-quality welds in aerospace applications. By establishing clear guidelines for the qualification process, DIN 7990 aims to guarantee the safety and reliability of welded components in the aerospace sector. The standard covers aspects such as welder and welding operator qualification, testing and certification, as well as the necessary training and examination procedures. By adhering to DIN 7990, manufacturers and suppliers in the aerospace industry can ensure that their welding personnel meet the stringent requirements of this safety-critical sector.