Plain English Meaning
Everything done to keep aircraft, airports, and the people in and around them safe from intentional harmful acts.
Full Definition
The combination of measures, procedures, and human resources used to protect civil aviation — including aircraft, passengers, crew, airports, and supporting infrastructure — from acts of unlawful interference such as hijacking, sabotage, theft, and unauthorized access.
Context Anchor
In flight training, this term appears when instructors and learners discuss securing aircraft, controlling keys, checking who is allowed near the aircraft, and reporting suspicious behavior at an airport.
Derivation
Aviation comes from a Latin word meaning “bird,” through French, and refers to flight. Security comes from a Latin word meaning “free from danger or care.” Together, the term points to protecting flying activities from danger caused by people.