Part 107 Airspace: How to Read a Sectional Chart Without Crying

Every Part 107 student hits the same wall. Regulations are memorization, weather is tedious but logical, and then the study guide shows a sectional chart and half the class quietly panics. It looks like a topographic map designed by someone who hates you. Here is the secret the chart does not want you to know: you only need about a dozen symbols, and the logic underneath it is simpler than it looks.

Quick answer: for the Part 107 test, learn the six airspace classes (A, B, C, D, E, G), what each one requires from a drone pilot, and how to read floors and ceilings off the chart. Then practice converting between MSL altitudes printed on the chart and the AGL altitudes the 400 foot rule cares about. That is 80% of the airspace game.

Why the FAA cares so much about this

The Part 107 test is not really about drones. It is about whether you can put a drone into airspace that airplanes, helicopters, and people on the ground are already using, without creating a problem. The FAA cannot watch you fly, so it tests the next best thing: can you look at a location on a chart and correctly figure out what you are allowed to do there.

That is the mental model that makes airspace click. Every airspace question is really asking one thing: at this spot, at this altitude, who else might be here, and what do I have to do before I fly?

The six classes, ranked by how much they matter to you

Class G: your home turf

Uncontrolled airspace. No authorization needed, no tower to call, just you and the Part 107 rules. Most of the country’s land area is Class G at the surface, and most commercial drone work happens in it. If a test question describes a location away from any airport with no special markings, the answer is usually “this is Class G, go fly.”

Class E: the sneaky one

Controlled airspace that exists to protect instrument flights. Everywhere above Class G is typically Class E starting at 1,200 feet AGL, which drone pilots mostly ignore because we cannot go up there anyway. What matters to you is the exception: around many smaller airports, Class E drops to the surface, shown with a dashed magenta line, and inside it you need authorization. Students miss this because the dashed line looks harmless. It is not.

Class D: towered small airports

A cylinder around a towered airport, usually from the surface up to about 2,500 feet above the airport elevation, shown as a dashed blue circle with a number in a box. That number is the ceiling in hundreds of feet MSL. If your job site sits inside the dashed blue, you need authorization through LAANC or the FAA’s DroneZone before you fly. The test loves asking you to read that ceiling number.

Class C and B: the busy airports

Class C surrounds mid-size airports with radar service, drawn as solid magenta rings. Class B surrounds the biggest airports, LAX, JFK, O’Hare, drawn as solid blue rings stacked like an upside down wedding cake. Both require authorization for drones, and the shelves of the cake matter: a location outside the inner ring might still sit under a shelf that starts at 3,000 feet, which does not affect you at 200 feet AGL. Reading whether your spot is under, inside, or outside the rings is the exact skill the test measures.

Class A: not your problem

Everything from 18,000 feet up. Drones do not go there. The test asks about it once, maybe, to make sure you know it exists.

MSL versus AGL: the conversion that fails people

The chart prints everything in MSL, altitude above sea level. Part 107’s 400 foot ceiling is in AGL, altitude above the dirt under your drone. The test loves to mix them.

The classic question: a tower is 1,000 feet MSL and the ground around it is at 800 feet MSL, so the tower sticks 200 feet into the air. Can you fly 400 feet above the top of it? Part 107 lets you go 400 feet above a structure if you stay within 400 feet of it laterally. So from that tower you could legally reach 1,400 feet MSL, even though 400 feet AGL off the ground next to it is only 1,200 feet MSL. If that sentence made your eyes blur, good. That is exactly the calculation to drill until it is boring.

The symbols that actually earn points

You get a legend booklet during the real exam, but students who look up every symbol run out of time. Memorize these cold:

• Airport symbols: blue means towered, magenta means no tower. The little tick marks around the symbol tell you about runways and fuel.
• Airspace boundaries: solid blue (B), solid magenta (C), dashed blue (D), dashed magenta (E to the surface), fuzzy magenta and blue bands (E floors at 700 or 1,200 feet).
• The big bold numbers in each grid quadrant: maximum elevation figures, the highest obstacle in that box rounded up. Test questions use them constantly.
• Obstacle symbols with two numbers, like a small tower icon with 1249 above and (449) below: top number is MSL, the parenthetical is AGL height.
• Special use airspace: restricted, prohibited, warning, and military operation areas, all bounded by hashed blue or magenta lines. MOAs are the trap. They are not prohibited, but the test wants you to know what happens inside them.

The questions the FAA keeps recycling

After enough practice tests, the patterns get obvious. Expect some version of: given a chart excerpt, what is the floor of the controlled airspace at this point. Given a coordinate in degrees and minutes, find it on the chart (yes, latitude and longitude, and yes, it is worth ten minutes of practice). Given an airport symbol, what is the CTAF frequency or the field elevation. Given a structure near an airport, what is the highest you can fly without authorization.

Every one of those is a lookup skill, not a knowledge skill. Which is good news: lookups are trainable in an afternoon once someone shows you the method. That is genuinely most of what separates a 60% chart score from a 90% one.

How to get good at this in a week

Pull up the FAA’s own VFR sectional for your home area, free online, and spend twenty minutes a day just finding things. Your house. The nearest airport’s class and ceiling. The biggest obstacle within five miles. Then take chart-heavy practice questions and force yourself to answer from the chart, not from memory.

The payoff goes beyond the test. Every commercial flight you will ever make starts with this exact question: what airspace am I about to be in, and do I need authorization. Pilots who learned charts for real check LAANC in ninety seconds and bid jobs confidently. Pilots who memorized answers spend the rest of their careers slightly unsure. Be the first kind.

Common questions

What airspace can a Part 107 pilot fly in without authorization?

Class G airspace, the uncontrolled airspace that covers most of the country away from airports, requires no authorization. Controlled airspace (B, C, D, and most surface-level E) requires FAA authorization first, which most pilots get through LAANC in minutes.

Do I need to memorize every sectional chart symbol for the test?

No. You need the airspace boundaries and floors, tower and airport symbols, elevation figures, obstacles, and special use airspace. The test gives you a chart legend booklet, but students who rely on it for every question run out of time.

What is the difference between AGL and MSL on the test?

MSL is altitude above mean sea level, which is what the chart prints. AGL is altitude above the actual ground under you, which is what the 400 foot rule uses. The FAA loves questions where you have to convert between the two using the terrain elevation on the chart.

How many airspace questions are on the Part 107 test?

The FAA weights airspace at roughly 15 to 25 percent of the exam, so expect somewhere between 9 and 15 questions. Combined with chart reading questions inside other topics, chart fluency affects a third of your score.