How do I restore deleted default aircraft in FS2004?

To restore deleted default aircraft in FS2004, first recover the complete aircraft folder from the Windows Recycle Bin. If it is no longer there, back up your add-ons and run the original FS2004 installer’s Repair option. A clean backup from the same FS2004 installation is the safest single-aircraft alternative.

Each flyable aircraft must sit directly beneath <FS2004 installation folder>\Aircraft with its configuration, flight model, model, textures, panel and sound files intact. Check our list of aircraft originally supplied with FS2004 if you are unsure whether the missing model was a Microsoft default or an add-on.

Choose the right restoration method

Use the Recycle Bin for a recent deletion, Repair for several missing stock files, and a clean backup when you need only one aircraft.

How do I repair the FS2004 default aircraft?

The original FS2004 installer can restore missing stock aircraft without requiring you to locate individual files on the discs.

1. Close FS2004. Do not repair the installation while the simulator or an aircraft configuration editor is running.
2. Check the Recycle Bin first. If the deleted aircraft folder is present, restore the whole folder rather than selecting individual files.
3. Back up your add-ons. Copy at least the Aircraft, Gauges and Effects folders, plus any default aircraft files you have modified.
4. Start the original installer. Insert the first FS2004 installation disc and launch Setup. If autorun is blocked, open the disc in File Explorer and run the installer directly.
5. Select Repair when offered. Supply the remaining discs as requested. If the installer does not provide a repair choice, cancel rather than starting an uncertain installation over your working copy.
6. Reapply the FS2004 9.1 update if required. This keeps repaired core files at the same update level as the rest of the simulator.
7. Launch FS2004 and inspect Select Aircraft. Remove any manufacturer, model or variation filters that could hide the restored entry.

A mistake we see often is trying to drag apparent aircraft files straight from an installation disc. Many original files are stored inside installer archives, so running Setup is safer than guessing which files must be extracted.

Can I restore only one default aircraft?

You can restore one aircraft by copying its complete folder from your own clean backup or another clean installation made from your licensed FS2004 media.

If a damaged version of the folder still exists, rename it before copying the clean folder into Aircraft. This is safer than merging them, particularly when the old aircraft.cfg contains repaint entries you may want to recover later.

A complete aircraft normally needs:

• aircraft.cfg and the corresponding .air flight-model file
• The required model folder and model file
• Every texture folder used by its aircraft entries
• A working panel and sound folder, or valid aliases to other installed aircraft

Keep the original default folder name. Some add-ons alias a stock aircraft’s panel or sound by folder name, so renaming the restored folder can leave those add-ons silent or without instruments.

Will Repair remove my add-on aircraft?

Repair normally restores Microsoft files and leaves unrecognised add-on folders in place, but it can replace files you edited inside a default aircraft.

Back up customised aircraft.cfg, panel, sound and flight-model files before proceeding. A full uninstall and reinstall is more disruptive than Repair and should be the last resort because add-ons, shared gauges and configuration changes may need to be installed again.

Why is the restored aircraft still missing?

A restored aircraft usually remains absent because its folder is nested incorrectly or its aircraft.cfg no longer points to a valid flight-model file.

• Check the folder depth: the correct structure is Aircraft\AircraftName\aircraft.cfg, not Aircraft\AircraftName\AircraftName\aircraft.cfg.
• Check the flight model: the sim= value in each [fltsim.x] entry must match the name of an installed .air file.
• Check the titles: each title= value must be present and unique. Duplicate titles can cause one variation to be ignored.
• Check model references: a value such as model=example requires the corresponding model subfolder.
• Clear selection filters: the aircraft may be installed but hidden by the manufacturer, model or variation choices in the selection screen.

If the aircraft appears but produces an Aircraft Initialization Failure message, restore the complete folder again rather than replacing only its textures or model.

What if I no longer have the FS2004 discs?

Without the original media, the only exact restoration source should be a clean backup from your own licensed FS2004 installation.

Microsoft’s stock aircraft files are copyrighted, so downloading an unofficial redistribution is not a safe substitute. If you only need a flyable 737, our compatible freeware Boeing 737 package for FS2004 can replace that capability, while the wider freeware aircraft and add-on library offers alternatives for other types. These do not restore the original stock folders, so add-ons that depend on default panel or sound aliases may still require the genuine aircraft files.