Broadcast A radio transmission that originates from an aircraft and that is not directed to any particular receiving station. Discover more from Canadian Flight Trainers Subscribe to get the latest posts sent to your email. Type your email… Subscribe Related Articles: Abbreviations and Acronyms in AviationGlossary: Automatic Dependent Surveillance – Broadcast (ADS-B)Glossary: Automatic Terminal Information Service (ATIS)Glossary: Local Area Augmentation System (LAAS)Glossary: Wide Area Augmentation System (WAAS)