If you have more than one GPS source in use at one time, the ForeFlight app will prioritize which GPS source to use based upon a hierarchy. Here is the GPS priority list starting with the highest priority source.
- Dual / Bad Elf*
- Other GDL90 (Stratux, Lynx, etc.)
EXAMPLE: If you have a GPS equipped iPad, Garmin, and a Sentry all in use at the same time, the GPS used will be from the Garmin followed by the Sentry and then by the iPad's GPS receiver.
*This priority assumes Direct Connect mode is turned on. If it is not, then these devices will fall into the "iOS" priority. We recommend using these devices with Direct Connect turned off.