How do you read aeronautical charts for flight simulation?

To read aeronautical charts for Aviation & Real-World Flying practice in a simulator, first identify the chart type, edition, orientation and units. Use its own legend to decode symbols, then trace the route laterally, build the altitude profile, note frequencies and restrictions, and verify that the chart matches the simulator’s navigation data.

Which aeronautical chart should you use?

Choose the chart by phase of flight and by whether you are flying under visual or instrument rules. “Aeronautical map”, “aviation map” and “flight map” are informal terms; pilots generally use several specialised charts rather than one map for the entire flight.

An en-route chart cannot replace an airport diagram, while an approach chart does not provide all the information needed to reach the terminal area. Charts also differ between countries and publishers, so the legend and notes belonging to that chart series take priority over a symbol remembered from another one.

How do you read an aeronautical chart step by step?

Read each chart in a fixed order: identity, orientation, legend, lateral route, vertical profile, frequencies, notes and contingencies.

1. Confirm the identity and edition. Check the aerodrome or location indicator, chart title, procedure name, runway, transition and revision or effective information. A plate for the correct airport but the wrong runway variant can look convincing until the final few miles.
2. Confirm the chart’s purpose. Establish whether it is a VFR, en-route, aerodrome, departure, arrival or approach chart. This tells you which details are operational instructions and which provide background awareness.
3. Establish orientation, scale and units. Find north, magnetic-variation information and any statement saying whether tracks are magnetic or true. Confirm whether elevations and altitudes are in feet or metres and whether distances are in nautical miles or another declared unit. If a units note uses SI, it means the International System of Units in that context; read the exact note because aviation publications can mix metric values with feet and nautical miles.
4. Open the correct legend. Decode aerodrome symbols, fixes, radio aids, airspace boundaries, obstacles and line styles from the publisher’s own key. Colours and dashed lines are not universal.
5. Trace the lateral route in order. Follow every fix, airway, course, turn and leg distance from the starting point to the destination. For a procedure, include the selected runway and route transition rather than following only the most prominent line.
6. Build the vertical picture. Separate terrain and obstacle elevations from minimum route altitudes, crossing restrictions, sector altitudes and approach minima. Identify every point at which you must be at, above or below a level.
7. Collect frequencies and identifiers. Distinguish communication frequencies such as ATIS, ground and tower from VOR, NDB, localiser and ILS frequencies. When using a radio aid, pair its frequency with the published identifier and course.
8. Read every applicable note. Notes may specify climb gradients, equipment requirements, conditional turns, speed limits, unavailable routes or instructions that override an assumption made from the graphic.
9. Brief the contingency. On an approach, know the missed-approach route, altitude and holding point before descending. For VFR flight, identify diversion aerodromes, high ground and places where visual checkpoints may be difficult to recognise.
10. Cross-check the simulator. Compare the FMS or GPS leg list with the chart, including transitions, discontinuities and altitude constraints. A route line that looks roughly correct on a moving map is not enough.

What do aeronautical chart symbols and numbers mean?

A symbol identifies a feature or instruction, while its shape, colour, label and position determine how the nearby numbers should be interpreted. When an unfamiliar mark makes you ask “what does this mean?”, read the legend entry together with the surrounding labels rather than interpreting the number in isolation.

Runway numbers normally represent the runway’s approximate magnetic direction rounded to the nearest ten degrees, with the final zero omitted. They are designators, not exact headings to enter into the autopilot. Magnetic variation and delayed runway renumbering can also produce differences between a chart, the aircraft instruments and older scenery.

How can you tell which altitude to fly?

Only an altitude identified as part of your route, clearance or procedure should be treated as a commanded level. Large or prominent numbers may describe terrain rather than an altitude for the aircraft.

• Aerodrome elevation describes the airport’s elevation relative to the stated datum.
• Terrain and obstacle figures help with clearance and situational awareness. Some chart series print elevation above mean sea level and height above ground in different positions or brackets; confirm this in the legend.
• Minimum en-route or route altitude applies to a defined airway or segment and may account for obstacle clearance, navigation reception or other criteria stated by that chart system.
• Crossing restrictions apply at a named fix and may require an exact altitude, a minimum, a maximum or an altitude window.
• Minimum sector or safe altitude provides a defined level within a stated area. It is not automatically a cleared cruising altitude or permission to descend off the published route.
• DA, DH, MDA or MDH belongs to a particular approach and aircraft or operation category. Read the minima table, profile and notes together.

A mistake we see constantly is entering every altitude printed beside a route into the FMS. First establish whether the figure is a restriction, a minimum, an elevation or advisory information.

How do you read aeronautical maps for VFR flight?

Read a VFR chart by combining the planned track with terrain, recognisable checkpoints, airspace limits, obstacles and diversion options. Do not trace a straight line between airports and inspect the airspace only afterwards.

• Draw or visualise the route and note its scale, direction and approximate leg lengths.
• Check terrain elevation, prominent obstacles and areas where rising ground reduces safe options.
• Identify controlled, prohibited, restricted or otherwise notified airspace along and near the track.
• Select checkpoints that should be recognisable in the simulator, such as coastlines, towns, rivers, railway lines or distinctive aerodromes.
• Record aerodrome, information and control frequencies appropriate to the route.
• Plan a diversion before reaching any area where weather, terrain or scenery quality may make pilotage unreliable.

Our practical guide to reading terrain, airports and visual checkpoints on a sectional chart covers this workflow in more detail. Airspace deserves a separate pass because the line alone is insufficient; use our explanation of airspace classes, boundary symbols and vertical limits when decoding those labels.

How do you read IFR flight charts as a complete route?

Read IFR charts as a connected set running from the departure runway through the en-route structure to the arrival, approach and missed approach. The joining fixes and transitions must agree between each chart.

On the en-route chart, follow the airway or RNAV route through each named fix, recording track, distance and the applicable minimum level. At the terminal areas, confirm that the chosen SID and STAR transitions actually connect to the en-route portion. Our guide to matching SID and STAR transitions, fixes and restrictions explains the procedure-specific details.

An approach plate must be read in three connected parts: the plan view shows lateral geometry, the profile shows descent and crossing levels, and the minima section defines the lowest applicable altitude or height. The missed approach is part of the briefing, not something to decode after reaching the minimum. See our walkthrough of approach profiles, minima and missed-approach instructions for a fuller explanation.

How do you transfer a charted route into the simulator?

Enter fixes and procedures in chart order, then compare the programmed leg list with the printed route before departure.

• Set the departure airport and expected runway, then select the SID and the transition that joins the en-route route.
• Enter airways and intermediate fixes in sequence instead of programming only the origin and destination.
• Select the STAR, arrival transition, approach and runway appropriate to the planned operation.
• Check for omitted fixes, duplicate waypoints, unexpected direct legs, course reversals and missing altitude or speed constraints.
• Confirm navigation frequencies, barometric reference and approach minima where the aircraft requires manual entry.
• Leave a deliberate vector or manual-leg discontinuity in place until you understand how it should be flown.

If a procedure menu presents several similarly named choices, the first or third option has no special aeronautical meaning. Match the complete procedure, runway and transition names rather than choosing by list position or by which line looks shortest.

Automatic route loading can hide errors. Some aircraft do not import every charted restriction, and a valid FMS route does not prove that VNAV will meet the required descent or climb profile. Check the chart even when the moving map appears correct.

Why does the chart not match the simulator, scenery or FMS?

Most disagreements occur because the chart, navigation database and scenery represent different data editions or different layers of the simulated world.

• Different data cycles: A renamed or added fix can produce NOT IN DATABASE. Where possible, use chart and aircraft navigation data from compatible effective periods or AIRAC cycles.
• Old airport scenery: Real runways may have been extended, rebuilt or renumbered after the scenery was produced. Taxi according to what is physically modelled while recognising why a newer diagram differs.
• Wrong procedure transition: Two versions of the same SID, STAR or approach may start at different fixes or serve different runways. Recheck the full selection in the FMS.
• Intentional discontinuity: A DISCONTINUITY may represent radar vectors, a manual termination or an expected clearance. Do not close it automatically.
• Unsupported coding: Simpler navigation units may omit holds, radius-to-fix legs, conditional turns or certain constraints. The chart remains necessary to understand the intended geometry.
• Magnetic versus true: The chart, simulator map and aircraft display may apply magnetic variation differently. Confirm the convention before treating a few degrees of difference as an error.
• Pressure or unit error: Incorrect QNH, an early change to standard pressure, or feet-versus-metres confusion can create a vertical discrepancy even when the selected number appears correct.

Never replace a missing waypoint with a similarly named nearby fix simply to clear an error. Confirm its identity and coordinates, use compatible data, or choose a procedure represented by both the chart and the simulator.

How should you evaluate Skywise for aviation charts and navigation data?

Evaluate Skywise, or any named aviation-data platform, by the exact product and data it supplies rather than by the brand label. A chart viewer, moving map, FMS navigation database, route planner and fleet-data platform are not interchangeable.

• Purpose: Confirm whether the product actually supplies pilot charts, machine-readable navigation data or only another form of aviation information.
• Provenance: Identify who publishes the underlying charts or data and whether the material is intended only for planning, simulation or operational use.
• Currency: Look for effective dates, revision information and AIRAC identifiers where applicable. A polished map display does not prove that its procedures are in date.
• Coverage: Check the countries, aerodromes, chart types and procedures included rather than assuming worldwide coverage.
• Simulator compatibility: Establish whether its navigation data can be used by the particular aircraft or simulator. A readable chart image does not update the FMS database.
• Data alignment: Compare the chart edition with the aircraft database and scenery. All three can legitimately depict different versions of the same airport.
• Operational status: Never infer authorisation for real flight from a familiar name or simulator integration.

Can simulator charts be used for real flying?

Simulator charts, archived plates and moving-map data must not be the sole source for real-world navigation. Actual flight requires authorised, in-date charts and navigation data, compliance with the applicable operating rules, and a complete weather and NOTAM briefing. Simulation material is suitable for practice and familiarisation only.