What is World of AI and how do I install it in FSX?

World of AI (WOAI) is a legacy freeware traffic system that adds scheduled, computer-controlled airline aircraft to Microsoft Flight Simulator X and FSX: Steam Edition. To install it, run the separate WOAI utility, load one or more airline package archives, select the correct FSX folder, then enable airline traffic in the simulator.

What does World of AI add to FSX?

World of AI adds aircraft that park, taxi, depart and arrive according to compiled flight plans. Each package normally represents a particular airline or traffic group, so installing one package does not create worldwide traffic.

The aircraft are optimised for AI use rather than hand-flying. They generally lack a proper virtual cockpit and the systems expected from a normal add-on aircraft. WOAI is also not a live timetable service: its routes, operators and liveries reproduce the period in which each package was produced.

WOAI is normally additive and does not require activation in the FSX Scenery Library. Existing default or third-party traffic may remain alongside it, although legacy traffic-file formats can cause a conflict described below.

How do you install World of AI traffic in FSX?

Install the utility first, keep the individual traffic packages compressed, and test one airline before attempting a large batch installation.

1. Download and extract the installer utility. Obtain the WOAI installer required for FSX traffic packages, then extract its archive to a normal writable folder. The utility is separate from the airline packages and does not create traffic by itself.
2. Enable the required .NET component if necessary. The legacy installer was written for Microsoft .NET Framework 2.0. On Windows 10 and 11, its compatibility components are normally supplied through the Windows feature labelled .NET Framework 3.5, which includes .NET 2.0 and 3.0. Enable that feature if the utility will not open or Windows requests the older framework.
3. Download at least one traffic package. Choose airlines from our World of AI aircraft and flight-plan package collection. Leave each airline package archive compressed unless its included instructions explicitly say otherwise; the WOAI utility reads the archive itself.
4. Select the active FSX installation. Close FSX, start the utility and choose FSX rather than FS2004 if it presents that choice. Confirm that the target is the root folder containing fsx.exe. Do not rely blindly on automatic detection, especially if boxed FSX and Steam Edition have both been installed on the computer.
5. Install one package first. Select the downloaded package archive, review the destination and let the utility copy its aircraft and traffic files. If Windows reports access denied, or the installer claims success without creating files, rerun it with administrator rights. This is most often required when FSX is beneath Program Files or Program Files (x86).
6. Enable airline traffic. Start FSX and open its traffic settings. Set Airline traffic density to 100 per cent temporarily while testing; a lower value can exclude some compiled flights. Raise General aviation traffic density only for packages containing GA traffic. Airport vehicles, road traffic and boats do not control WOAI aircraft.
7. Test the package at a suitable airport. Restart FSX after installation, load a major airport served by the chosen airline and try several times or days. Once traffic appears, reduce the density slider to the level that gives acceptable performance.

A mistake we see repeatedly is downloading only the installer utility. WOAI needs both parts: the utility places the files, while the separate packages supply the aircraft, liveries and schedules.

Can you use World of AI with FSX: Steam Edition?

Yes, World of AI can work with FSX: Steam Edition when the installer writes to the Steam installation actually being used.

A common Steam location ends in Steam\steamapps\common\FSX, but the full path depends on the selected Steam library. Older utilities can detect a leftover boxed-FSX registry entry and install everything there instead, so verify the folder containing the Steam copy of fsx.exe before continuing.

WOAI files do not belong in a scenery add-on folder and should not be added to the Scenery Library. Steam Edition uses the same relevant FSX subfolders: aircraft go under SimObjects\Airplanes, while scheduled traffic BGLs go under Scenery\World\Scenery.

Why is WOAI installed but no aircraft show up?

Missing WOAI aircraft usually mean the package went to the wrong FSX folder, no package was installed, the traffic slider is too low, or there is no scheduled flight at the selected airport and time.

• Check that a package was installed: The installer utility alone contains no airlines or schedules.
• Check the destination: Look for new aircraft folders under SimObjects\Airplanes and traffic BGL files under Scenery\World\Scenery in the FSX copy you launch.
• Restart FSX: Fully close and reopen the simulator after adding or removing traffic BGL files.
• Test at 100 per cent density: Low slider values can omit flights whose compiled percentage threshold is higher.
• Change airport and time: WOAI follows weekly schedules. A valid package may produce nothing at a small airport, outside an airline's operating hours or on the wrong day.
• Consider airport parking: AI aircraft may fail to spawn when an airport lacks a parking position large enough for the assigned model.
• Check Windows permissions: An apparent successful installation can still leave the FSX directories unchanged if an older utility was blocked from writing beneath Program Files.

For a file-level check, the notes supplied with our FSX AI Traffic Editor and inspection utility document the expected aircraft and traffic-file locations. If the BGL exists but its required aircraft folder does not, reinstall that package rather than copying unrelated models into it.

Default traffic disappeared after installing WOAI

Legacy traffic-file formats are the usual cause when WOAI appears but stock or other FSX traffic vanishes. Some WOAI flight plans use the older FS2004 traffic format; FSX can read those files, but their presence can suppress traffic compiled in the native FSX format.

Do not try to fix this by renaming the BGL extension. The flight plans must be converted with a compatible traffic-plan utility, or the conflicting BGL must be moved outside every active scenery folder. Back up traffic files before converting or moving them.

Duplicate aircraft and lower frame rates

WOAI does not automatically remove overlapping default or third-party schedules. If two traffic systems contain the same airline and routes, both sets can appear, creating duplicate departures and overcrowded parking.

Disable only the overlapping traffic BGL after making a backup; avoid deleting shared aircraft folders. AI traffic also consumes processor time, particularly at large hubs, so install the airlines you actually want and lower Airline traffic density after confirming that the installation works.