A power outage that shut Heathrow Airport earlier this year, causing travel chaos for more than 270,000 passengers, was caused by a "catastrophic failure" of equipment in a nearby substation, according to a new report. Read more: https://news.sky.com/story/catastrophic-failure-that-led-to-heathrow-power-outage-revealed-as-report-outlines-the-chances-missed-to-prevent-it-13391266 #skynews #heathrowairport #travel #passangers SUBSCRIBE to our YouTube channel for more videos: http://www.youtube.