Failure because of a "power supply problem" :
Our (small scale in comparison) IT system is 'hosted' in a failure-proof computer hosting centre. There are multiple power supplies, diesel backup generators, batteries, and the whole thing is mirrored in real time to a comparable centre in another continent with automatic failover and restart. Multiple redundancy, something an airline should be familiar with. These organisations nowadays may be Clever Stuff, but are standard, not hugely expensive, and shared by all sorts of major IT operations, banks, credit card companies ... and airlines. I remember the presentation.
I would like to enquire just where the power supply failure actually was so we can find how long the local public electricity supply organisation took to fix it, and which hosting organisation was involved. Journalists, over to you.