Flying & Syncing7 min read
Syncing to MSFS
The companion app keeps your sim's Community folder in step with the world: your airports, everyone else's published airports in your chosen regions, and the shared object library. You almost never need to touch it - but knowing the one golden rule explains nearly every “where's my airport?” moment.
The golden rule
Practical consequence: the sequence is always build finishes → sim closes → sync runs → next sim launch shows the airport. If your airport “isn't showing up,” run that sequence in your head first.
When syncs happen
- When MSFS closes - the main trigger. The app waits a few seconds for the sim to release its files, then syncs.
- Nightly- at 3:00 AM local time by default (configurable per-account in the app's Automatic sync panel, including timezone and a pause switch).
- On launch, if stale - if the last successful sync is more than 24 hours old, the app catches up when it starts.
- When your build finishes - a fresh successful build requests a sync automatically, so your newest airport installs at the first opportunity.
- Manually - the Sync now button, any time (it still waits for the sim to close).
What gets installed
Instead of littering your Community folder with hundreds of packages, everything merges into three:
- Project Airports - Airports: every published airport in your selected regions, plus all of yours.
- Project Airports - Objects: the shared building and object library airports depend on.
- Project Airports - SimObjects: animated pieces like windsocks.
The app tracks exactly which files it owns and never touches anything else in your Community folder. Your other add-ons are invisible to it.
Regions
You choose which world regions to carry in the app's Regions tab (first run defaults to North America + Europe). More regions = more community airports in your sim = more landing destinations, at the cost of some disk space. Your own airports always install regardless of region.
Verify & self-healing
It fixes itself
Each sync compares a server-side revision digest and re-installs anything missing or changed on disk - if an antivirus quarantined a file or you hand-deleted a folder, the next sync repairs it silently.
Deep verify
The Re-verifybutton goes further: it re-hashes every managed file's actual content and repairs any drift. Use it as the first step whenever scenery seems half-installed - then see Troubleshooting if something still looks wrong.
- 1Close MSFS completely
- 2Open the companion app → Regions tab
- 3Press “Re-verify” and let it finish
- 4Launch the sim and check again