Avionics equipment and systems, namely, navigation apparatuses for aircrafts in the nature of digital onboard flight control computers; transponders; aeronautical radio communication machines and apparatuses; computer software used with avionics for controlling and programming navigational apparatus; and software for initializing, testing and operation of avionics

Computer software that provides voice interaction for simulating air traffic audio communications between Air Traffic Controllers and pilots or pilot trainees for instruction and training; and computer software that provides instructional communications scenarios between Air Traffic Controllers and pilots or pilot trainees