Install a downloaded FS2004 flight plan correctly: find the .PLN folder, load it in Flight Planner, and fix missing or incompatible routes.
To install a downloaded flight plan in Microsoft Flight Simulator 2004, extract the archive, copy the .PLN file to Documents\Flight Simulator Files (called My Documents on older Windows versions), then open FS2004’s Flight Planner, choose Load, select the plan and confirm the departure position.
Where do downloaded FS2004 flight plans go?
Put an ordinary FS2004 .PLN file in your Windows Documents\Flight Simulator Files folder, not in the main FS2004 installation directory. Windows may display Documents as My Documents, and a redirected Documents folder may sit under OneDrive or another location.
The location is convenient rather than compulsory: FS2004’s Load window can browse to a plan stored elsewhere. If the standard folder is missing or unclear, save a temporary plan from FS2004 and use the folder selected by its Save window.
Which file from the download should I use?
The file required by the standard FS2004 Flight Planner normally has a .PLN extension.
| Downloaded file | What it is | What to do |
|---|---|---|
.ZIP, .RAR or .7Z | A compressed archive | Extract it first; do not ask FS2004 to load the archive itself. |
.PLN | A pilot flight plan | Copy it to Flight Simulator Files and load it through Flight Planner. |
.FLT with .WX or .PLN | A saved-flight package | Keep the matching files together and load the flight through FS2004’s flight-selection screen. |
.RTE, .FPL or another route format | Usually an aircraft-specific or planner-specific route | Convert or export it as an FS2004-compatible .PLN, or load it through the add-on that created it. |
.BGL | Compiled scenery or AI traffic data | Do not put it in Flight Simulator Files; it is not a normal pilot flight plan. |
If the download is still compressed, our archive-extraction guide explains how to avoid nested folders and hidden files.
How do I load the flight plan in FS2004?
Load the extracted .PLN through FS2004’s Flight Planner rather than trying to open it from Windows.
- Start FS2004 and select the aircraft you intend to fly.
- Open Flight Planner from Flights > Flight Planner.
- Select Load, browse to
Flight Simulator Filesand choose the downloaded.PLN. - Inspect the route, including its departure airport, destination, cruise altitude and waypoint sequence. Avoid selecting Find Route unless you want FS2004 to recalculate and potentially replace the imported routing.
- Confirm the plan. When FS2004 offers to move the aircraft to the departure airport, choose Yes if you want to start there; choose No if you have already positioned the aircraft correctly.
For the next steps—activating the route, using ATC and following it with the GPS—see our practical walkthrough for flying an FS2004 flight plan.
Why won’t the downloaded flight plan load?
A plan usually fails because it is still inside an archive, has the wrong extension, or was exported for another simulator or aircraft.
- The Load window appears empty: extract the archive and check that the actual file ends in
.PLN. A common mistake is a hidden double extension such asroute.pln.txt. - FS2004 rejects the file: the
.PLNextension alone does not guarantee an FS2004-compatible file structure. Re-export it specifically for FS2004 or FS9; simply renaming another format will not convert it. - Only a text route or briefing was supplied: recreate the route manually in Flight Planner. The FS2004-compatible Super Flight Planner utility can also create, import and export suitable plans.
- The route uses an add-on aircraft format: consult that aircraft’s route loader. A custom FMC may require its own folder and format instead of the standard FS2004 plan.
Why are waypoints missing or the route changed?
FS2004 can only resolve airports and navigation fixes present in its installed scenery and navigation database. A plan made with newer data may contain renamed, moved or entirely unknown fixes, so replace those legs with intersections, VORs or direct segments that FS2004 recognises.
If the destination is an add-on airport, confirm that its ICAO identifier matches the plan and that the scenery is active. Also inspect the route before accepting any automatic recalculation, because Flight Planner may substitute its own airway routing.
Will the plan appear in the GPS and aircraft FMC?
A successfully loaded FS2004 plan normally appears in the simulator’s default GPS, but it may not appear automatically in a third-party aircraft’s FMC. Custom navigation systems often use separate route files, databases or import controls, so treat the FS2004 .PLN and the aircraft’s FMC route as distinct unless its documentation says otherwise.