a selection to show which airports have restaurants along route
The Flight Planner has this capability already. It is part of the Airports and Fuel Along Route tool. You can access the tool by using the dedicated button on the right side tool bar (red arrow in screenshot below). The window that opens allows you to specify various amenities at airports along a route of flight. You can also specify how far off the center line of your route you want to include in the filter (up to 50 miles). By using the Restaurants on Field filter, the flight planner will only show airports that have a restaurant on the field (see screenshot below).
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