FAA UAS FACILITY MAPS
The FAA published the UAS Facility Maps to assist Part 107 licensed Drone Pilots (RPIC) to fly in controlled airspace regulated by the FAA. In doing so they have enabled the LAANC system for automated authorization to fly in controlled airspace.
If you search the UAS Facility Maps for a specific address it will show you if that address falls into controlled airspace which requires authorization to fly. In addition, the Max AGL is displayed in the grid if the address is actually in controlled airspace.
As a typical government agency, they have created a link to the UAS Facility Map with an extremely long URL
I have found DRONEFLYZONE.COM which is easy to remember. Simply visit the site and the UAS Facility Map is right there. In addition, there are some helpful tips.
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