Troubleshooting Gps - Boeing ForeFlight Sentry Pilot's Manual

WAAS GPS

Troubleshooting GPS

If Sentry GPS accuracy exceeds 100 meters, ForeFlight will not display your position on the
map. To troubleshoot GPS issues or to compare GPS accuracy with the iOS device's internal
GPS (if equipped), select More > Devices > Sentry and disable Use as GPS. When Use as
GPS is deselected, ForeFlight uses the iOS device's internal GPS (if equipped).
The lack of an aircraft icon on the map can be a result of poor GPS signal or device settings.
To troubleshoot, follow these steps:
1. Ensure Sentry has a clear view of the sky.
2. Select More > Settings > Enable Ownship and verify Always is selected.
3. Verify Use as GPS is enabled in More > Devices > Sentry.
4. If enabled, toggle Use as GPS off to see if the issue is corrected.
5. Verify iOS Location Services.
a. Open the iPad/iPhone Settings app and select Privacy.
b. Verify Location Services are enabled.
c. Select ForeFlight.
d. Verify While Using the App or Always is selected.
e. Enable Precise Location.
How do I troubleshoot a yellow or red GPS LED.
Poor GPS accuracy is often a result of Sentry not being able to view the GPS satellites. Move
Sentry in the cockpit or bring Sentry closer to a window (if indoors) to improve accuracy.
Sentry Pilot's Guide 61