How do I navigate in a flight simulator using charts, VORs and dead reckoning?

To navigate a flight simulator with charts, VORs and dead reckoning, plot short legs between identifiable fixes, calculate wind-corrected headings and times, then tune and identify each VOR to confirm your position. Fly the heading, monitor landmarks and elapsed time, and correct the estimate whenever a radio or visual fix disagrees.

For Aviation & Real-World Flying practice, the method is the same in Microsoft Flight Simulator 2024 and 2020, X-Plane, Prepar3D and older FS titles. Cockpit controls, scenery and installed navigation data differ, so a chart may not always agree with the simulator. For an actual flight, use valid approved publications rather than simulator data or expired charts.

How charts, VORs and dead reckoning work together

Charts define the planned route, VORs provide radio-derived lines of position, and dead reckoning maintains an estimated position between confirmed fixes.

Do not treat any one source as infallible. Keep the chart as the route reference, run dead reckoning continuously, and use identified VORs and unmistakable visual features to reset the estimate.

Which FS charts should I use?

Use a VFR chart for navigation by terrain and landmarks, or an IFR en-route chart when VORs, airways and intersections define the route.

An “FS chart” is normally an ordinary aviation chart used alongside a flight simulator, not a special simulator file format. Choose the chart according to the phase and style of flight:

• VFR chart: Best for roads, rivers, coastlines, towns, obstacles, terrain and controlled airspace.
• IFR en-route chart: Best for VORs, published radials, airways, intersections and en-route altitude information.
• SID or STAR chart: Covers a published departure or arrival rather than the whole route.
• Approach chart: Provides final approach courses, fixes, altitudes, minima and missed-approach instructions.
• Aerodrome chart: Used for runways, taxiways and parking areas, not en-route navigation.

Mark the departure point, destination, turning points, suitable VORs and distinctive visual checkpoints. Our guide to selecting and interpreting VFR, en-route and approach charts explains the chart symbols and pre-flight briefing process.

Check the chart edition against the simulator’s navigation data. Updates can change frequencies, identifiers, procedures and even whether a VOR exists, while older scenery may still depict obsolete landmarks or facilities.

Courses measured from a chart may begin as true courses, whereas published VOR radials and procedure courses are normally magnetic unless marked otherwise. Do not apply magnetic variation again to a published magnetic course. Follow the chart legend, particularly in areas where true-north references are used.

Does the built-in map replace an aviation chart?

A route planner or moving map does not necessarily replace a proper chart because it may omit airspace details, chart notes, minimum altitudes or procedure information.

Use the built-in map to create or inspect a route, but verify the details against the chart you intend to follow. A moving aircraft symbol is also a GPS-derived position aid; hide or ignore it when practising genuine VOR and dead-reckoning navigation.

How do I plan and fly the route?

Plan the flight as a sequence of manageable legs ending at VOR fixes, crossing radials or unmistakable visual checkpoints.

1. Select reliable fixes: Choose features that should be easy to recognise and VORs that are within practical reception range. Terrain can screen a station even when the straight-line distance looks reasonable.
2. Plot each leg: Measure its course and distance, then note terrain and airspace that constrain where you can fly. Avoid a route that depends on one difficult-to-identify landmark.
3. Calculate the heading: Apply forecast wind to the desired ground track, then make the required true-to-magnetic conversion. Course is the intended path over the ground; heading is where the aircraft’s nose must point to hold that path.
4. Prepare a navigation log: Record course, heading, distance, expected groundspeed, estimated time and the next checkpoint. Calculate time with minutes = distance in NM ÷ groundspeed in knots × 60. Our wind-correction, groundspeed and leg-timing method covers this planning in greater depth.
5. Configure the avionics: Confirm electrical and avionics power, place the required frequency in the correct NAV receiver and make it active. If the display has a navigation-source selector, choose VLOC, VOR or NAV rather than GPS, using the label fitted to that aircraft.
6. Identify the VOR: Verify the displayed identifier or listen to its Morse identifier through the audio panel. A frequency alone is not positive identification.
7. Set the required course: Rotate the OBS or course selector to the planned inbound course or outbound radial. Confirm that the expected TO or FROM indication appears.
8. Start the clock: Begin timing over a known departure point or when established on the new leg. Fly the calculated heading instead of repeatedly steering towards individual objects.
9. Track and update: Compare each actual crossing time with the estimate. Recalculate groundspeed and later arrival times from observed performance rather than carrying the original error through the flight.

How do VOR radials fit into dead reckoning?

A VOR radial is the charted magnetic line extending from the station, regardless of the aircraft’s direction of travel.

An aircraft on the charted 090 radial is roughly east of the station. The required OBS setting depends on whether it is flying away from or towards that station:

The CDI shows displacement from the selected course. It does not directly point towards the station, and the number selected on the OBS is not an instruction to turn to that heading. With normal sensing established, intercept the course towards the needle, reduce the intercept angle as it centres, then hold enough wind correction to keep it centred.

Near station passage, the CDI can become very sensitive or unreliable and the TO/FROM indication will change. Hold the planned heading through this cone of ambiguity and resume corrections after the indications settle. For more cockpit detail, see our explanation of tuning, identifying and tracking a VOR with the CDI and OBS.

How do I use dead reckoning between VOR fixes?

Dead reckoning projects the aircraft’s position from a confirmed starting fix using heading, estimated groundspeed and elapsed time.

Start every leg from the best position fix available. Hold the calculated heading, note the time and compare the outside view with charted features expected along the route. A checkpoint appearing to one side indicates track error; arriving early or late indicates that the groundspeed estimate needs correction.

After two confirmed fixes, calculate observed groundspeed from the known distance and elapsed time. Use that result for the remaining legs if the wind and aircraft configuration have not changed significantly.

What should I do if I am off course?

Once your actual position is confirmed, either regain the planned track or replan directly to the next safe checkpoint.

Regain the original line when terrain, controlled airspace or the exercise requires it. For small errors, the one-in-60 approximation gives track error as 60 × off-track distance ÷ distance flown; add a suitable closing angle to intercept the route, then resume a corrected heading.

A direct leg may be simpler when no route constraint exists, but do not merely point at the old checkpoint. Measure or estimate the new course and distance, apply wind correction, restart the timing calculation and record the revised plan.

Can I navigate without GPS or DME?

Yes, GPS and DME are optional when the route provides usable visual checkpoints, timed legs, station passage or crossing VOR radials.

One VOR radial gives a line of position, not a precise point. A second radial from another identified station creates a cross-fix; lines meeting near a right angle produce a more reliable fix than radials crossing at a shallow angle. Where two receivers are available, use one to track the route and the other to monitor the crossing radial. Our guide to constructing and recognising intersections from crossing navigation references covers the full technique.

If only one NAV receiver is fitted, retuning can interrupt primary course guidance, so use it only when the aircraft is stable and the next frequency, identifier and radial have been prepared. With no second radial, combine the primary radial with elapsed time, a visual checkpoint or confirmed station passage.

DME measures slant range to compatible ground equipment, which may be paired with a VOR but is not inherent to every VOR. It will not necessarily read zero over the station because altitude contributes to slant range.

Why is the VOR needle wrong or missing?

Most apparent VOR failures come from the wrong navigation source, an inactive frequency, reciprocal-course confusion, lack of reception or mismatched chart data.

• No CDI response: Check avionics power, confirm that the frequency is in NAV rather than COM, make it active and select the receiver connected to the displayed CDI.
• GPS route shown instead of VOR guidance: Change the course source from GPS to the aircraft’s VLOC, VOR or NAV setting.
• No identifier: Verify the frequency, range, altitude and line of sight. Select the appropriate NAV audio if an audible ident is expected. Treat an unidentified station as unusable.
• Needle appears to move backwards: Check the selected course and TO/FROM flag. For example, flying inbound while the outbound radial is selected produces guidance opposite to the intended inbound course.
• Needle oscillates near the station: This is normal close to station passage. Maintain heading until the aircraft has passed through the ambiguous area.
• Autopilot will not capture: The OBS only selects a course. The correct navigation source and compatible NAV mode must also be selected, and an excessive intercept angle may prevent a clean capture.
• Chart and simulator disagree: Compare the station identifier, frequency and position with the simulator’s installed data. Do not force an obsolete charted radial or procedure to fit newer navigation data.

Which source should I trust when they disagree?

Trust the source that has been positively identified, is appropriate to the flight and is known to match the simulator’s data.

First check the VOR identifier, receiver, navigation source and TO/FROM indication. Then check whether the chart and simulator represent the same navigation-data period. A recognisable scenery object may be misplaced or outdated, while a correctly identified radio aid may still disagree with an old chart.

Once a dependable visual or radio fix establishes the aircraft’s position, reset the dead-reckoning log from that point and recalculate the remaining headings and times. Do not average conflicting information without first finding the cause of the disagreement.