Term

TSA

Daniel MarkFounder & Editor, Aviatopia
Published Mar 1, 2026Updated Mar 1, 20261 min read

Transportation Security Administration — the U.S. agency responsible for security screening of passengers and baggage at airports.

aviation-glossary

Quick Facts

Type
Security Agency
Also Known As
TSA
Used By
Passengers, Airport Operators

Definition#

TSA stands for Transportation Security Administration. Created after September 11, 2001, it is the U.S. federal agency responsible for security in all modes of transportation, primarily known for airport passenger and baggage screening.

Why It Matters Operationally#

TSA sets screening protocols, manages checkpoint throughput, and certifies security equipment. Its procedures directly affect passenger processing times, airport layout, and airline scheduling.

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