Computers are a vital part of sending thousands of people miles into the air in steel boxes. So when they stop working, the airplanes generally stop flying. This is the reality Delta is having to deal with today, as a computer outage at its main hub in Atlanta has grounded flights worldwide.
The outage was first reported around 5.00AM ET this morning. Without the computer systems online, Delta personnel cannot check in passengers, and the flight information systems seem to be broken. Some reports claim that Delta staff in London were filling out boarding passes by hand.