Restricted Airspace around the Isle of Man.  Red 'D' areas are Danger Areas (firing or bombing), Purple 'R' areas are Restricted airspace (generally nuclear installations), and Transponder Mandatory Zones (TMZ) are in pink.  'Area 13' is an in flight refuelling area, only in use occasionally and not generally affecting Ronaldsway traffic.
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An Island Images picture © Jon Wornham