In ForeFlight, geo-referenced plates and taxi diagrams are marked with a faint blue box around the geo-referenced area. The GPS aircraft position will be displayed only within this blue-boxed area when viewing the plate or diagram.
To check for geo-referencing, zoom into the plate or diagram and look for the blue box around the runway or taxiways
The blue box indicates the geo-referenced area on an approach plate.
The blue box indicates the geo-referenced area on a taxi diagram.
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