Aviation 101
A beginner-friendly course in how commercial aviation works
Aviation 101 is a short, free course that walks through the fundamentals of commercial aviation — one focused chapter at a time. Each chapter explains a topic in plain language, checks your understanding along the way with a couple of quick questions, and finishes with a short quiz. No login required to read a chapter or take a quiz — answers are checked instantly, right there on the page.
Signed in to My Atlas? Your quiz results are saved automatically as you go, so you can track which chapters you've completed and unlock Academy badges as you work through the course. This is a first set of 16chapters — more will be added over time, and if there's a topic you'd like to see covered, let us know.
How a Flight Happens
From flight plan to touchdown — the anatomy of a single flight.
Every flight — whether it's a 45-minute hop or a 15-hour long-haul — follows the same basic sequence of phases. Here's what actually happens between booking your seat and landing at your destination.
Airports 101
Landside, airside, and everything in between.
An airport is really two worlds joined at a security checkpoint: the public landside, and the controlled airside where aircraft actually operate. Here's how the pieces fit together.
Airlines, Alliances & Codeshare
Why one ticket can put you on someone else's plane.
Not every flight number matches the airline actually operating the aircraft. Alliances, codeshares, and business models shape how airlines cooperate — and compete — across the network.
Ground Operations & Turnaround
Everything that happens to an aircraft between flights — fast.
A short-haul aircraft can be back in the air less than an hour after landing. Turnaround is the tightly choreographed set of tasks that makes that possible.
Air Traffic Control & Airspace
The invisible system keeping aircraft safely apart.
Every aircraft in the sky is being tracked and separated by a chain of air traffic controllers — handing each flight off, sector by sector, from departure to arrival.
Aviation's Regulatory Bodies
Who sets the rules — and who just helps the industry agree on standards.
Aviation runs on a mix of binding regulation and voluntary industry standards. Knowing which body does which job makes the rest of the alphabet soup much easier to follow.
Aircraft Basics
Why the plane you're on shapes the route it can fly.
Aircraft aren't interchangeable. Size, range, and engine type determine which routes an aircraft type can fly economically — and that shapes airline networks more than most passengers realize.
Fares, Tickets & Distribution
What actually happens between clicking "buy" and holding a boarding pass.
A ticket price isn't one fixed number — and how you bought it shapes what an airline, and its systems, actually know about your trip.
Cargo & Air Freight Basics
The freight that flies is the freight that can't wait.
Air cargo isn't about the cheapest way to move something — it's about the fastest. Here's how flowers, vaccines, and your online order end up sharing a hold with your suitcase.
Aviation Security (AVSEC)
Why the checkpoint is only one layer of a much bigger system.
Long before you reach the metal detector, a whole system of layers, checks, and background vetting is already working to keep flights safe from deliberate harm.
MRO & Maintenance Fundamentals
The unglamorous work that keeps every flight airworthy.
Behind every dispatched flight is a maintenance program deciding what can wait and what can't — and an industry built around keeping aircraft airworthy for decades.
Aviation Economics & Business Models
Why a full flight can still lose money.
Airlines look like they're either printing money or bleeding it, and both are true. Here's the unit economics that decide which.
Sustainable Aviation
Why cleaning up flight is mostly a fuel problem, not an airplane problem.
Aviation's emissions are unusually hard to cut, and the industry's biggest near-term answer isn't a new kind of aircraft — it's a new kind of fuel. Here's how SAF, net-zero targets, and CORSIA actually fit together.
Airport Design & Infrastructure
Why an airport is built for its worst hour, not its average day.
Terminals, runways, gates, and baggage belts all trace back to one planning question: how many people and aircraft does this place need to handle at its busiest moment? Here's how that question shapes everything an airport builds.
Weather & Meteorology for Aviation
Why the biggest delay of your day might be a storm you never see.
Weather is the one disruption no airline can engineer around. Here's how pilots read the sky, why fog closes some runways and not others, and why a storm hundreds of miles away can still hold your flight on the ground.
Careers in Aviation
It's not just pilots and flight attendants — it's an entire economy of coordination.
Aviation employs far more people than the ones you see on board. Here's the real range of career paths, how licensing and recurrent training work for the regulated roles, and how to build a career in the industry without a technical background.