Computer software; Computer software programs; Interactive computer software; Application software; Computer programs (downloadable software); Downloadable software applications (apps); Electronic flight control systems; Flight control apparatus; Aircraft cockpit instrumentation; Aeronautical communications apparatus; Communication software; Computer digital maps; Digitized land maps; Global positioning system (GPS) apparatus; Apparatus for navigation; Navigation systems using satellite reference; Electronic publications (downloadable); Computer based training apparatus; User guides in machine readable format; Digital apparatus; Databases