How do I fly a GPS (RNAV) approach in Microsoft Flight Simulator?
To fly a GPS (RNAV) approach in Microsoft Flight Simulator, load the RNAV procedure into your aircraft’s GPS or FMS, keep the nav source on GPS rather than VLOC, track the course in NAV mode, and use APR only when the procedure and avionics provide vertical guidance you can actually capture.
What is a GPS (RNAV) approach in Microsoft Flight Simulator?
A GPS approach in MSFS usually means an RNAV approach flown from satellite-based navigation data rather than a ground-based localiser. In practice, your aircraft follows a programmed lateral path to the runway, and sometimes a vertical path as well.
The important bit is that not every RNAV approach behaves like an ILS. Some give you only lateral guidance, so you still have to manage your own descent against published altitude constraints. Others, especially LPV-style approaches in Garmin-equipped aircraft, can feel very close to an ILS once established.
What is the difference between RNAV, LNAV, LNAV/VNAV and LPV?
| Approach type | Lateral guidance | Vertical guidance | What it means in MSFS |
|---|---|---|---|
| RNAV (LNAV) | Yes | No | Fly the line laterally, but descend using step-down altitudes and MDA. |
| RNAV (LNAV/VNAV) | Yes | Usually yes | Some avionics can capture a glide path-like descent if set up correctly. |
| RNAV (LPV) | Yes | Yes | Closest GPS equivalent to an ILS; often gives stable lateral and vertical guidance. |
If you expect a glide path on an LNAV-only approach, the autopilot may never descend. That catches a lot of sim pilots out. Always check the charted minima type and what your avionics actually show.
How do I set up and fly an RNAV approach step by step?
- Choose the correct runway and approach
Pick the runway in use, then select the matching RNAV approach in the GPS, Garmin unit or FMS. If there is more than one variant, make sure you choose the right one for the runway end and transition you want.
- Load the approach properly
You can preload procedures from the world map, but we still recommend checking them in the cockpit after loading. MSFS can occasionally assign an odd transition, a vectors-to-final leg you did not want, or a discontinuity you need to tidy up.
- Verify the transition and initial fixes
Look at the waypoints in the flight plan page and make sure the sequence makes sense. If ATC or your own route will bring you to a specific initial approach fix, use that transition rather than guessing and hoping the aircraft will sort itself out.
- Keep the CDI or nav source on GPS
This is one of the biggest gotchas. On Garmin-style avionics, the course source must stay on GPS or FMS, not VLOC. If you accidentally switch to VLOC, the aircraft may stop tracking the RNAV final course altogether.
- Brief the altitudes before descent
Check the altitude restrictions at the initial, intermediate and final approach fixes. For LNAV approaches, these altitudes are not optional; they are how you stay clear of terrain and line up for a stable final approach.
- Get established before the final approach fix
Join the approach in a tidy, predictable way. Be at the correct altitude, slow enough to configure, and already tracking the inbound course before the final approach fix if possible. A rushed RNAV approach often ends with the autopilot chasing the path instead of cleanly intercepting it.
- Use NAV for lateral guidance
Arm or engage your aircraft’s lateral navigation mode so it follows the FMS or GPS track. The exact label varies by aircraft: you may see NAV, LNAV, GPS or FMS.
- Use APR only when vertical guidance exists
If the procedure is LPV or LNAV/VNAV and your avionics support vertical capture, arm APR or APPR before reaching the final segment. If it is LNAV only, APR may not do anything useful for descent, so you will usually stay in lateral navigation and manage the vertical profile yourself.
- Configure early and fly a stable final
Get approach flap, gear and target speed sorted in good time. RNAV approaches can tempt people to stare at the magenta line and ignore energy management; the line will not save an unstable approach.
- Respect minima and go around if required
At DA or MDA, either continue visually if you have the runway environment and are stable, or fly the missed approach. Do not keep descending just because the GPS is still drawing a neat line to the runway.
Should I use NAV mode or APR mode for an RNAV approach?
For the lateral part, NAV is usually enough. The aircraft will track the programmed course whether you are on an en route leg, a STAR or the final approach segment.
APR matters mainly when you want the autopilot to capture vertical guidance on an RNAV approach that actually provides it. In many Garmin-equipped GA aircraft, APR will arm glide path capture for LPV or LNAV/VNAV. In some aircraft, the mode logic is a bit different, so always watch the annunciations rather than assuming the button press worked.
If you are flying a simple GPS unit or an aircraft with limited autopilot capability, you may fly the lateral path coupled and descend manually. That is still a perfectly normal RNAV approach.
Why will my aircraft not capture the RNAV glide path?
If the glide path will not capture in MSFS, one of these is usually the reason:
- The approach is LNAV only, so there is no vertical path to capture.
- The nav source is set to VLOC instead of GPS/FMS.
- You armed APR too late or after passing the capture point.
- You are too high, too fast or not properly established on final.
- The aircraft or add-on models RNAV logic differently from the one you are used to.
- The loaded procedure or transition in the sim is wrong or broken.
When in doubt, abandon the approach setup, level off, clean up the plan, and re-intercept it properly. Trying to salvage a bad RNAV capture usually creates more work than starting again.
Do RNAV approaches work the same in Garmins, airliners and add-on aircraft?
No. The core idea is the same, but the buttons and mode logic vary a lot.
Garmin-equipped GA aircraft
These are usually the easiest for RNAV work in MSFS. Load the procedure, keep the source on GPS, use NAV for lateral guidance, and arm APR for LPV or LNAV/VNAV glide path capture if available.
Airliners
In an Airbus or Boeing-style FMS, an RNAV approach is usually flown as a managed FMS procedure rather than a simple GPS line. The aircraft may use different mode names, and some add-ons model RNAV final approach logic in much more depth than the default aircraft. The principles still hold: correct procedure, correct source, proper intercept, correct minima.
Older GPS units
Aircraft fitted with older-style GPS equipment may provide only limited vertical support or none at all. In those, think of the RNAV approach primarily as lateral guidance and fly the descent profile yourself.
World Map setup or cockpit setup: which is better?
For convenience, the world map is fine. For accuracy, the cockpit is better. We often use the world map to build the broad route, then verify or reload the approach in the avionics once the flight is running.
That extra check catches most of the usual MSFS procedure problems: unwanted vectors, wrong transitions, duplicate waypoints, and final approach legs that do not sequence cleanly.
Common RNAV approach mistakes in Microsoft Flight Simulator
- Confusing GPS guidance with ILS behaviour.
- Leaving the nav source on VLOC.
- Expecting a glide path on an LNAV-only approach.
- Joining the final approach too high and too fast.
- Not checking altitude restrictions before descent.
- Trusting the world map procedure without reviewing the actual waypoints in the aircraft.
- Using APR as a magic fix instead of understanding what mode is armed.
What is the best way to practise RNAV approaches in MSFS?
Start with a Garmin-equipped GA aircraft at a straightforward airport with an RNAV approach that offers LPV or LNAV/VNAV. Those are the least confusing because you can clearly see the lateral path and, where available, a proper glide path indicator.
Once that feels natural, move to LNAV-only procedures. They force you to manage altitude properly, which is where most of the real skill sits. After that, try the same ideas in faster turboprops and airliners.
If you want extra aircraft, avionics-related add-ons or freeware enhancements for Microsoft Flight Simulator, our library is here: https://flyawaysimulation.com/downloads/.