41 Arranging and conducting of training seminars in the field of aviation; Educational services, namely, conducting classes, seminars, conferences, trainings in the fields of aviation and distribution of training materials in connection therewith; Providing training for certification in the field of aviation; Providing training in the field of aviation; Training in the use and operation of aircraft; Training in the use of aircraft; Training services in the field of business knowledge; Training services in the field of aviation