https://www.thesun.co.uk/news/3669536/british-airway-it-failure-outsourced-staff/
Source told The Sun that problem could have been avoided had staff kick-started back-up system sooner
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A second source close to Britain's national carrier told The Sun: "BA have had six major IT failures in 12 months, 12 months since outsourcing their IT....
Big surprise.
They should have learned their lesson by now! IT is almost everything to an airline.