At the beginning of the meeting, Dipl.-Ing. Hans Rieder from Saarbrücken announced that he was handing over his chairmanship to his deputy, Andreas Mück, Head of the Ultrasonic Transducers Business Unit at SONOTEC, after an impressive term of office. These changes at the top allow us to look back on the considerable achievements during Hans Rieder's tenure. In particular, the manual on materials testing with phased arrays, which was significantly advanced under his leadership, deserves our recognition and thanks. We would like to acknowledge Mr. Rieder for his dedicated work and the entire subcommittee group for their support.