"Peter Duniho" wrote in message ...
: ".Blueskies." wrote in message
: y.net...
: According to the naco link below, these are populated areas. I know I
: always thought it was the outline of lights also,
: but I cannot find that defined anywhere...
:
: They are not defined to be "well lit areas", but they aren't an official
: depiction of "non-sparsely populated areas", and as a matter of mapping
: expedience, I don't doubt that the area is based upon the general nighttime
: view of a region.
:
: The most important thing to be aware of is that the VFR charts are *not*
: useful for determining where you are with respect to 91.119.
:
: Pete
:
:

Do you have any references for that? The only thing I have been able to find is the NACO defined 'populated area' for
the yellow areas....

http://avn.faa.gov/index.asp?xml=nac...ary/aero_guide
http://avn.faa.gov/index.asp?xml=naco/online/aero_guide

....