Every field on the tracker, explained. Each entry opens with a plain-language
version for anyone who has never flown, then the real definition. Filter by handbook section or
by subject, or search.
HANDBOOK SECTION
SUBJECT
Sources. Definitions follow the FAA Pilot's Handbook of Aeronautical Knowledge
(FAA-H-8083-25C) and Airplane Flying Handbook (FAA-H-8083-3C), cited by section title
rather than chapter number, because numbering shifts between revisions while titles do not.
These are US government works and not subject to copyright. This glossary is a study aid and
a companion to a live data display; it is not a source of operational information and nothing
here is for navigation.