_______ COLUMNS Say Again? #42: The Mysterious D-Side The D-side isn't the song on the back of the C-side record ... it's an air traffic controller who uses brains rather than eyes to keep track of planes. A data controller can be the best friend a radar controller (and a pilot) ever had, but due to policy and personnel changes, D-sides are becoming rare birds. AVweb's Don Brown explains in this month's "Say Again?" column.
This is a companion discussion topic for the original entry at https://www.avweb.com/briefs/new-articles-and-features-on-avweb-223