In this article
A sectional chart brings geography and aviation information together: airports, terrain, landmarks, airspace, obstacles, and navigation aids share the same page. At first, the density of information can feel like the problem. Learning to separate those layers makes the chart easier to understand. Start with a small area and an official legend, then practice explaining how the details relate to one another.
Find your way with confidence
01
Start with the chart itself
The FAA describes sectional charts as visual navigation charts at a scale of 1:500,000. Terminal Area Charts use a larger scale and show more detail around selected busy terminal areas. A tablet can enlarge either display, but zooming does not change which chart product you are viewing.
For study, identify the chart name, effective dates, scale, and legend before choosing an airport. Keep an old training example clearly labeled as an example. Learning from its symbols is different from assuming that its frequencies, boundaries, or facilities still describe today’s conditions. The FAA maintains current chart products and charting notices.
02
Read an airport as a group of information
An airport symbol is the beginning of the information, not the entire airport description. Its depiction, identifying text, elevation, and associated data each have a role. The FAA chart legend explains what the particular symbols and abbreviations mean.
As a study exercise, choose one airport and list the questions you can answer from the chart. Then list what remains unclear. Avoid guessing that every number beside an airport means the same thing or that every printed runway outline represents a currently usable runway. The Chart Users’ Guide explains the difference between charted depiction and the operational details that need additional references.
03
Separate terrain, obstacles, and altitude references
Contour information and shaded relief help describe the shape of the terrain. Obstacles and elevation figures add information that serves a different purpose from an airport elevation or an airspace limit. Read the legend for each kind of marking rather than treating all height information alike.
Two terms deserve special attention: MSL refers to mean sea level, while AGL refers to height above the ground. A value using one reference cannot simply replace a value using the other. The FAA also notes that some obstacles may be uncharted or too new to appear in an edition. A chart is essential information, not a guarantee that every object is depicted.
04
Give airspace its own reading pass
After orienting yourself to the ground, study the airspace separately. Trace one boundary, identify its line style, and find the altitude information that belongs to that area. Ask what lies below, within, and above it. This changes the exercise from identifying a colored shape to understanding a volume.
Different airspace classes and special-use areas carry different meanings. The symbol tells you where to look next; understanding it also requires the relevant rules and current information. If your explanation is only “that area is blue,” return to the legend and describe which marking you mean and what it represents.
05
Use the Chart Supplement alongside the map
The Chart Supplement contains airport and facility details that a sectional cannot readily show in graphic form. These include information such as operating hours, communications, runway details, lighting, weather sources, notices, and procedures. It complements the chart rather than replacing it.
Try pairing an airport’s chart depiction with its official Chart Supplement entry. Identify one detail that appears in both and one that needs the text reference. For a ground lesson about Falcon Field, your instructor can guide that comparison using the current publications. Keep the airport’s actual operating details separate from a general website description or a saved chart image.
06
Practice explanation instead of symbol spotting
Choose a small chart area and explain it aloud in a consistent order: the location, terrain, airports, airspace, and the information you need to investigate. Keep the legend available. Looking up a symbol carefully is more useful than confidently inventing its meaning.
Next, close the reference and describe one concept from memory. Reopen it to check the explanation, and write down the exact point you missed. Ask your instructor to select a different area for the next exercise so you practice the reasoning rather than memorize a screenshot. Your target is a clear description with identified gaps, not an unsupported route or altitude recommendation.
Sources & next steps
- FAA Aeronautical Chart Users’ Guide
- FAA Aeronautical Information Manual: Aeronautical Charts
- FAA Digital Chart Supplement
- FAA Aeronautical Information Manual: Potential Flight Hazards