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The Invisible Map in the Sky

A Highway With No Painted Lines

Why the Sky Has Classes, Not Just One Set of Rules

Keeping Aircraft Apart

Separation: The Invisible Bubble Around Every Aircraft

Radar Control vs. Procedural Control

Flight Check: Air Traffic Services

What "Air Traffic Services" Actually Means

Three Services, One Name: ATC, Flight Information, and Alerting

Mapping the Sky: Classes, Airways, and Altitude Rules

Control Zones, TMAs, Upper Airspace, Airways, and the Semicircular Rule

Flight Check: Airspace, Airways, and the Semicircular Rule

One Flight, Start to Finish

Flight AB123: A Complete Journey Through Every Airspace and Service

Flight Check: Following a Complete Flight

Optional track: a deeper look at air traffic services beyond Introduction to Aviation's basics — airspace classification, separation standards, and how radar and procedural control actually work.

Introduction to Aviation introduced the controllers who hand an aircraft off from gate to gate. This optional track goes underneath that handoff chain: how airspace itself is divided into classes with different rules, how controllers keep aircraft safely separated whether or not radar is available, and what actually happens in the room where it's all coordinated.

Air Traffic Services

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