FSX default aircraft missing? Check edition differences, selection filters, aircraft.cfg faults and SimObjects paths, then repair the files safely.
Default aircraft are usually missing from Microsoft Flight Simulator X (FSX) because the wrong edition is being compared, aircraft-selection filters are hiding them, or files in SimObjects\Airplanes are missing or damaged. Check your edition, clear the filters, then repair the active installation rather than downloading a replacement default-aircraft pack.
Which missing-aircraft symptom points to the cause?
The number and type of aircraft missing will usually reveal where the fault lies.
| What is missing? | Likely cause | First check |
|---|---|---|
| Extra paint schemes only | Variations are hidden | Enable Show all variations |
| An aircraft from Deluxe or Acceleration | It is not included in the installed edition | Confirm the FSX edition |
| One complete aircraft | Its folder or aircraft.cfg is damaged | Inspect that aircraft under SimObjects\Airplanes |
| All fixed-wing aircraft | The Airplanes path or installation is damaged | Check SimObjectPaths in the active FSX configuration |
| Helicopters only | The separate Rotorcraft path is missing | Check SimObjects\Rotorcraft |
How do I restore missing default aircraft in FSX?
Work through these checks in order so that a simple filter or edition difference is not mistaken for file corruption.
- Clear the aircraft-selection filters. Open the aircraft selection window from Free Flight or the Aircraft menu. Set the publisher, manufacturer and aircraft type filters to their all-inclusive values, then enable Show all variations. The latter mainly restores hidden liveries rather than an entire aircraft type.
- Confirm which FSX edition is installed. Standard, Deluxe, Gold, Acceleration and Steam Edition do not all contain the same aircraft. Compare the installation with our breakdown of aircraft supplied with each FSX edition before attempting a repair.
- Open the installation FSX actually uses. Fixed-wing aircraft normally reside under
SimObjects\Airplanes, while helicopters useSimObjects\Rotorcraft. Boxed FSX, Steam Edition and custom installations can have different roots; our explanation of boxed-versus-Steam folder differences helps identify the live installation. A common mistake is repairing a dormant FSX folder while the shortcut launches another copy. - Inspect the affected aircraft folder. A normal default-aircraft folder should contain
aircraft.cfg, an aircraft.airfile and the relevant model, panel, sound and texture folders. If the complete folder is absent, do not substitute files from another edition or an unofficial aircraft pack. - Check the active FSX configuration. If every fixed-wing aircraft has disappeared, back up the per-user FSX configuration and inspect its
[Main]section. It should contain aSimObjectPathsentry pointing toSimObjects\Airplanes; rotorcraft need a corresponding path toSimObjects\Rotorcraft. When boxed FSX and Steam Edition have both been installed, use the configuration whose modification time changes after closing the copy of FSX being diagnosed. - Regenerate a damaged configuration if necessary. Close FSX, rename the active configuration file as a backup and launch the simulator. FSX will create a fresh one with its standard SimObject paths, although display, controller and add-on path settings will need to be restored carefully.
- Repair the base installation. For Steam Edition, back up customised default files and use Steam's file-integrity verification. For boxed FSX, use the original installer's repair option where available or reinstall the base files and apply the appropriate updates in the correct order. Our boxed-FSX Service Pack 1 procedure explains that sequence. Do not apply the boxed service packs to Steam Edition.
Can a damaged aircraft.cfg hide a default aircraft?
A malformed aircraft.cfg can prevent one aircraft or some of its variations from appearing in FSX.
FSX builds the selection list from numbered sections such as [fltsim.0]. Missing or malformed sections, duplicate title= values, incorrect numbering and damaged user-interface fields can hide entries or place them under unexpected filters. An incorrect sim= reference may instead allow an entry to appear but stop it loading correctly.
If an add-on installer edited a default aircraft, restoring the verified original configuration is safer than copying lines from a different model or FSX edition. Preserve any custom liveries first because verification or repair may replace changes made inside default files.
Do I need to reinstall all of FSX?
A full reinstall should be the last resort; clearing filters, regenerating the configuration or repairing files resolves most missing-default-aircraft cases.
Reinstall only when the default SimObjects folders remain incomplete after repair, the installation contains mixed boxed and Steam files, or FSX cannot regenerate working paths. Back up saved flights, controller assignments and legitimate add-on configurations before removing anything.
What if aircraft are missing only from AI traffic?
Missing AI traffic is a separate problem from default aircraft disappearing from the Free Flight selector.
An aircraft can remain selectable while traffic schedules, airport parking, traffic settings or AI-specific files prevent it from appearing in the simulator. Use the separate checks for restoring missing FSX AI aircraft when the flyable fleet is intact.