Airspace & Charts: reading the sectional

0:00Host: Welcome back to the Drone Authority study podcast. This is episode two, Airspace and Charts, and I am going to be completely straight with you right at the top. This is the topic that sinks the most candidates. When people fail the Part 107, this is usually where it happened. Together, airspace and chart reading account for twenty percent of scored items under the current PSI blueprint, about twelve questions in a sixty-question blueprint-matched set. The good news, and I really mean this, is that it is very learnable once you stop trying to memorize everything and instead learn one small system that I am going to hand you in this episode.

0:38Let me set the scene for what you will actually face. On the real test, you get a figure supplement. That is a printed booklet of real sectional chart excerpts, actual aviation maps. The questions point you to a spot on one of those charts and ask you to do one of three things: identify the airspace at that location, find a frequency, or read terrain and obstacle data off the map. So this is not abstract theory. You are reading a map and answering practical questions about it. That framing should make it feel more concrete and less intimidating.

1:20Here is why people struggle. They try to memorize a giant table of every airspace class, every dimension, every rule, all at once, and they drown. The trick is to realize that as a drone pilot, you do not need most of that detail. Manned-pilot airspace knowledge is enormous, but your slice of it is narrow. So let me narrow it for you.

2:00Host: Here is the system, and it is one question. For a drone pilot, almost every airspace question on the exam boils down to this: do I need authorization to fly here? That is it. That is the question hiding inside most of these problems. And there are only two answers.

2:30Answer one: you are in controlled airspace, and yes, you need authorization. Controlled airspace, for our purposes, means Class Bravo, Class Charlie, Class Delta, and the surface area of Class Echo. In all of those, you must get authorization before you fly, and the great news is that you usually get it instantly through a system called LAANC, which I will explain in a few minutes. Answer two: you are in uncontrolled airspace, which is Class Golf, and no, you do not need air traffic control authorization. You can just fly, although, and this is important, every other Part 107 rule still applies. You still stay under four hundred feet, you still keep visual line of sight, you still yield to manned aircraft.

3:35So internalize this. If you can look at the chart and answer the single question, controlled or uncontrolled, you can answer the majority of the airspace questions on the exam. Everything else is detail layered on top of that one decision. Controlled means get permission. Uncontrolled means you are clear to fly but the rest of the rules still bind you.

4:15Now you might be asking, how do I tell from the chart whether I am in controlled or uncontrolled airspace? That is the whole game, and the answer lives in the colors and the line styles on the sectional. So let me teach you to read them, because that is most of the battle right there.

4:50Host: Sectional charts use two main colors, blue and magenta, and two main line styles, solid and dashed. Learn the combinations and you have cracked the code. Let me walk through each one. Solid blue rings mark Class Bravo, the busiest airports in the country, places like the major international hubs. Bravo airspace is often described as an upside-down wedding cake because of its shape, but for the exam, just remember solid blue equals Bravo equals busiest.

5:35Solid magenta rings mark Class Charlie. These are busy airports with a control tower and radar service, a step down from the giant Bravo hubs. Solid magenta, Charlie. Then dashed blue marks Class Delta. Delta airports are smaller towered fields. The line is dashed rather than solid, and it is blue. Dashed blue, Delta.

6:15Now here is the one that trips everyone up, Class Echo, because Echo shows up on the chart in two completely different ways, and the difference is crucial for a drone pilot. The first way is a dashed magenta line. A dashed magenta line means Class Echo that begins right at the surface. Because it touches the ground, that is controlled airspace, and you need authorization to fly there. The second way is a faded magenta shading, and the technical name for that fuzzy shaded band is a vignette. A magenta vignette means Class Echo that does not start at the ground at all, it starts at seven hundred feet above ground level. So underneath that shading, down near the surface where your drone actually flies, you are typically in Class Golf, uncontrolled, and you do not need authorization.

7:25Let me say that Echo distinction one more time because it is worth points. Dashed magenta line, Echo to the surface, controlled, get authorization. Faded magenta shading, the vignette, Echo starting up at seven hundred feet, so down low you are in Golf and you are clear. One is a crisp line, the other is fuzzy shading. Crisp line goes to the ground, fuzzy shading stays up high.

8:05Here is a memory hook to lock the whole color system in. Say this rhythm out loud a few times. Solid blue is Bravo, the busiest. Solid magenta is Charlie. Dashed blue is Delta. Dashed magenta is Echo to the surface. Faded magenta is Echo up at seven hundred. If you can recite that ladder smoothly, you have got the bulk of the airspace questions handled.

8:30Host: Let me do a quick class-by-class tour so the names connect to real ideas, not just colors. Class Bravo surrounds the nation's busiest airports and the airspace is layered like that wedding cake I mentioned, with bigger rings higher up. As a drone pilot you need authorization, available through LAANC where it exists. Class Charlie wraps busy airports that have a tower and radar, and again you need authorization. Class Delta is the smaller towered airport, a single tower, simpler shape, and yes, authorization required.

9:20Class Echo is the catch-all controlled airspace that is not Bravo, Charlie, or Delta. It fills in the gaps. As we covered, it either starts at the surface, shown by the dashed magenta line, or it starts at seven hundred feet, shown by the magenta vignette, and sometimes at twelve hundred feet elsewhere. The piece you care about is whether it reaches the surface where you fly.

10:00And then there is Class Golf, uncontrolled airspace. This is where a lot of drone flying actually happens, out in the open areas away from airports. In Class Golf you do not need air traffic control authorization. But, and I will keep hammering this because it is a classic trap answer, all your other Part 107 rules are still fully in force. Uncontrolled does not mean unregulated. It just means no ATC permission needed. You still owe the world your four hundred foot ceiling, your visual line of sight, and your duty to yield to every other aircraft.

11:00There is also restricted and special use airspace you may see depicted, things like restricted areas, military operations areas, and prohibited areas. For the exam, the headline is simple: those areas can be off limits or require special coordination, so you do not just fly into them. But the bread and butter of the test is the Bravo through Golf classification we just walked through.

12:00Host: Now let me explain LAANC properly, because it is your best friend and it comes up on the test. LAANC stands for Low Altitude Authorization and Notification Capability. Say it as one word, lance, with an extra syllable, la-ance. What it does is give you near-instant authorization to fly in most controlled airspace. Here is how it works. The FAA has published grids over controlled airspace, and each grid square has a maximum altitude it will approve automatically, called the ceiling. You request authorization through an FAA-approved app on your phone, the app checks the grid, and very often you get an approval back in seconds, right there in the field. That is the fast way, and it is the answer the exam wants when it asks how a Part 107 pilot quickly gets authorization in controlled airspace.

13:05Contrast that with the manual airspace-authorization path. If you need to fly higher than the LAANC grid value, or in controlled airspace LAANC does not cover, you submit an airspace request through FAA DroneZone and should plan well ahead. That is separate from an operational waiver. On the exam, the fastest normal authorization path in participating controlled airspace is LAANC.

13:45The other small but high-yield thing is airport symbols. On a sectional, the little airport icon itself is colored, and the color tells you something. A blue airport symbol means the airport has a control tower. A magenta airport symbol means it does not have a control tower. So blue equals towered, magenta equals non-towered. That single color rule comes up more often than you would expect, and it is easy to mix up with the airspace ring colors, so keep them separate in your mind: rings tell you the airspace class, the airport icon color tells you towered or not.

14:40Host: Let me close with a tactical tip for actually working the figure supplement on test day, because knowing the rules is one thing and applying them under pressure on a dense map is another. When the question hands you a frequency box or a number you do not recognize, do not panic and do not guess randomly. Find the specific airport the question is asking about, look at the data block printed right next to it, and the answer is almost always sitting right there in that block. Sectional charts are extremely dense, but they are not hiding anything. Every frequency, every elevation, every piece of data is printed somewhere near the feature it describes.

15:35A couple more practical notes on reading the map. Sectional charts use a scale of one to five hundred thousand, and there are tick marks along the latitude and longitude lines that help you measure distance, which matters when a question asks how far something is from an airport. Take your time, locate the feature first, then read the data. Rushing is what causes mistakes here.

16:15Two more chart features worth recognizing. Obstacles like towers are drawn as little markers, and next to them you will see two numbers, the height of the obstacle above sea level and, in parentheses, the height above the ground. For a drone pilot near a tall tower, that ground height is the one you care about, because it tells you how high the obstacle reaches into the airspace you fly in. And maximum elevation figures, those large blue numbers printed inside the grid squares, tell you the highest known feature, terrain or obstacle, in that block, which is a quick way to gauge what is sticking up around you.

16:55And keep temporary flight restrictions in mind, what pilots call T F Rs. These are short-notice closures that do not appear on the printed sectional at all, because they pop up for things like wildfires, major sporting events, or visiting dignitaries. You check for them separately before you fly, through official FAA sources. The exam may remind you that a current chart is not enough on its own, you also have to check for temporary restrictions that the static map cannot show.

17:35Host: Now let us add the part that most basic YouTube reviews skip: spatial orientation. The real test may not just ask what runway one eight means. It may ask where an aircraft is if it reports final for runway one eight. Runway one eight is roughly one eight zero degrees, so the aircraft is landing southbound. If it is on final, it is lined up with the runway before landing, which means it is north of the runway and moving south. Flip it around for runway three six. Runway three six is northbound, so an aircraft on final for runway three six is south of the runway and moving north.

18:45The same trick works for diagonal runways. Runway one three points about one three zero degrees, which is southeast. Final for runway one three means the aircraft is northwest of the runway moving southeast. Runway three one points about three one zero degrees, which is northwest. Final for runway three one means the aircraft is southeast of the runway moving northwest. Do not let the wording bully you. Translate the runway number into a compass direction, then put the airplane on the opposite side, coming toward that number.

19:45Downwind is the next trap. Downwind means the aircraft is flying parallel to the runway in the opposite direction of landing. In a standard left pattern, the runway is on the pilot's left while flying downwind. So for runway one eight, landing is southbound and downwind is northbound. To have the runway on the pilot's left while flying north, the aircraft must be east of the runway. For runway three six, landing is northbound and downwind is southbound. To have the runway on the pilot's left while flying south, the aircraft must be west of the runway. Slow, visual, and mechanical is better than guessing.

20:50Now coordinates. Latitude lines run east and west, but they measure north and south. In the Northern Hemisphere, bigger north latitude numbers are farther north. Longitude lines run north and south, but they measure east and west. In the United States, the longitude numbers are west, so bigger west longitude numbers are farther west. A point at zero seven six degrees forty five minutes west is west of a point at zero seven six degrees fifteen minutes west. That feels backwards for about five minutes, then it sticks.

21:55Distance questions often use minutes of latitude. One minute of latitude is about one nautical mile. So if an airport is at thirty six degrees thirty minutes north and your aircraft is at thirty six degrees forty five minutes north on the same longitude, you are about fifteen nautical miles north of the airport. You did not need a fancy calculator for that one. You just counted minutes of latitude.

22:55So let me recap the system. One question rules this whole topic: do I need authorization, yes in controlled airspace, no in uncontrolled Golf. Read it off the chart by the colors: solid blue Bravo, solid magenta Charlie, dashed blue Delta, dashed magenta Echo to the surface, faded magenta Echo at seven hundred feet. Get authorization fast with LAANC. Airport icon blue means towered, magenta means non-towered. Runway numbers are compass headings, final approaches from the opposite side, and left downwind keeps the runway on the pilot's left. Bigger north latitude is farther north, bigger west longitude is farther west, and one minute of latitude is about one nautical mile.

24:00This is the episode to study twice. Pair it with our interactive sectional chart reader on the site, drill it until the colors and runway positions are automatic, and then take the practice exam linked on this page. And of course, always verify current airspace and any temporary flight restrictions before any flight at faa.gov slash u-a-s. This is educational, not legal advice. See you in episode three, Weather.