Non-Destructive testing (NDT) is one of the important tools where the defects on the surface or inside the material/parts are detected without any physical damage. The acceptance/rejection decision is given by the quality control staff based on standard procedures or experiences. The defect searching and decision-making process in inspection training is crucial to save time and costs. A comprehensive and well-prepared theoretical training may not always ensure control accuracy and reduce mistakes resulting from subjectivity. Main purpose of this study is to attract attention to the importance of human factors in visual inspection. A novel approach is proposed that comprises a Learning Styles Questionnaire, using the eye tracking technology, and the NASA-TLX to assess cognitive workload. The pilot study was examining three casted parts with different defect density levels and geometrical designs. The number of fixations, fixation duration, and number of fixations were recorded by mobile eye-tracker for the 23 participants. Statistical analysis results confirmed that use of eye tracker technology has a potential to reduce visual inspection training time and improve testing accuracy. The cognitive stress indicator before and after the basic NDT training was determined as significantly different based on the training type that considers the learning styles.