----------------------------Original message---------------------------- I looked at both NOAA and DMA charts, but couldn't find the lat/long indicated for airports. I did find on the Missouri state aeronautical chart an airport directory which listed lat/long for each airport in degrees and minutes. Since most runways are less than a minute long, these lat/long notations are too vague to determine if they refer to the tower, radar, or what. Jim Coombs Map Librarian Southwest Missouri State University