Flight cancellations appear on screens near AirTran ticketing counters at Hartsfield-Jackson International Airport in Atlanta Thursday, Nov. 19, 2009, A problem with the system that collects airlines' flight plans caused widespread flight cancellations and delays across the U.S. Thursday. It was the second time in 15 months that a glitch in the flight plan system caused delays.
By Mark Scarp, contributing columnist
Guest Commentary by Andy Warren, Maracay Homes
Guest Commentary by Michael Carroll
Guest commentary by Phil Kerpen
By Mark Heller, Tribune