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(actually don't know it this is to be considered as a bug o a strange design choice)
Problem: Some default airports (or all?) comes with too large flatten/terraforming
example CAE7 in Canada
or SWES in Brasil
the terraforming is very subtle, maybe because it has a very large falloff, but can be quite noticeable:
Maybe not a bug, but and oversight? 
altitude from google earth
in those cases, the wrong terraformed terrain around the airport makes my scenery floating above the terrain (all my objects here have snap to ground off and absolute altitude, altitude is obtained mainly via SRTM so it is quite the right one, especially in areas without world updates...)
anyway, a 200 meters difference in altitude is noticeable
Please note that i'm not complaining about my scenery looking wrong in some places because of default airports terraforming
but want to you to focus in the opportunity of reviewing the default airport construction algorithm, or at least making the flattening rectangle areas visible in the sdk editor
the manual solution to this problem is pretty straightforward: overwrite the airport and re-place (place again) the runway at the correct altitude without some crazy falloff
Have a nice SU10 for next week :D
