British Airways $100M Outage Was Caused by Worker Pulling Wrong Plug: Times

A contractor doing maintenance work at a British Airways data center inadvertently switched off the power supply, knocking out the airline's computer systems and leaving 75,000 people stranded last weekend, the Times newspaper reported on Friday.

British Airways Cancels All London Flights as Global System Outage Wreaks Chaos 1:49

Quoting a BA source, the newspaper said the power supply unit that sparked the IT failure was working perfectly but was accidentally shut down by a worker. An investigation into the power outage is likely to focus on human error rather than any equipment failure, it said.

Related: BA Blames Power Surge for Global Outage

BA had to cancel all flights from London's Heathrow and Gatwick airports last Saturday. It blamed a power surge that knocked out its computer system, disrupting flight operations, call centers and its website.