Airstar Inc. designs and manufactures a variety of automated systems for ultrasonic testing. A novel ultrasonic C-scan instrument and software was developed. It combines the ultrasonic pulser/receiver with the motion control and data acquisition by using the same bus. Rather then collecting just an amplitude, it saves complete A-scans for each single pixel of the C-scan image. Post-processing of the C-scan allows to vary gate positions and other parameters after the scanning process.