On my last trip to to Fjällbacka/ESTF, I noticed that quite a few obstacles were missing. This part of the Swedish coastline is "littered" with antennae and wind turbines, but are they all included in any official obstacle database?
How does this work - is there a threshold on minimum height before including or is it simply difficult to keep the database updated? Is there anything we pilots can do?
Example of a few missing obstacles - I don't know their exact heights, but they were quite prominent from above: