Troubleshooting

Symptoms:

App is running, but nothing moves in X-Plane.

Fixes:

• Ensure your iPhone/iPad and computer are on the same Wi-Fi network.

• Restart X-Plane to refresh UDP connections.

• Disable VPNs or firewall rules that may block local network traffic.

• On macOS/Windows/Linux, confirm X-Plane’s “UDP data output” is  enabled (default is ON).
  

f you are still unable to connect, check the following:

• Use the Custom Connection option and enter the correct IP/port.

• On Windows 11, multicast support may not be enabled by default.
  

Go to Control Panel → Programs and Features → Turn Windows features on or off.
Make sure Multicast support (or similar networking feature) is enabled.
After enabling, restart your computer and try again.

Symptoms:

You return to the app after your device was in standby/sleep for a long time and Flight Deck FMS no longer recognizes X-Plane.

Status: We’re working on a fix.

Workaround (for now):

• Force-quit Flight Deck FMS and restart it.

• Ensure your device and simulator are on the same Wi-Fi before starting tracking.