>> Delta Airlines resuming a limited number of it's 6,000 global fights Monday after an early morning computer failure caused it to ground all world wide departures. Reuters reporter, Alwyn Scott says questions remain about what caused the system wide outage.>> Delta initially said it was a power outage in the area of their computer systems north of the Atlanta airport.
But, in fact, Georgia Power said there was no power outage in that area and that it was a piece of Delta equipment that had failed.>> Massive delays and cancellations still reported. Delta advising travelers to check the status of their flights before heading to the airport. Lines backing up from Boston's Logan International Airport to London's Heathrow and beyond, with customers tweeting their frustrations.
>> Most of these systems have back up batteries, back up generators, redundant networks, redundant communication systems. So it is unclear now why none of that worked and why the system actually went down.>> The glitch follows several high profile computer failures from US Airlines in recent months. Southwest halted departures last month after a technical outage.
American suspended flights from three hubs last September after computer problems. Experts say airlines face an increasing risk from technical failures as they automate more of their operations and outfit their planes with Wi-Fi