ForeFlight prioritizes GPS sources based on a defined hierarchy when multiple sources are connected. Here’s the list, from highest to lowest priority:
- Garmin
- Dynon
- Avidyne
- SkyEcho
- Sentry
- Stratus
- Bad Elf (with Direct Connect mode on; otherwise, it falls to “iOS” priority)
- Dual (with Direct Connect mode on; otherwise, it falls to “iOS” priority)
- FreeFlight
- Other GDL90 (e.g., Stratux, Lynx)
- SXAR1
- Baron
- Gogo
- SDR
- Simulator
- iOS device GPS
Example: If both a Garmin, Sentry, and GPS-enabled iPad are active, ForeFlight will use the Garmin’s GPS data, with the Sentry as backup, followed by the iPad GPS if both other sources become unavailable.
NOTE: For Dual/Bad Elf GPS devices, it is recommended that they be used with Direct Connect turned off unless specifically required.
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