LONDON (AP) — A fire at an electrical substation knocked out power to Heathrow Airport for most of Friday, forcing Europe’s busiest hub to shut down for roughly 18 hours, causing widespread cancellations and rerouting headaches, and stranding roughly 200,000 passengers. The blaze started just before midnight on Thursday at a substation about 2 miles from the airport and took firefighters around seven hours to bring under control. Authorities say they found no evidence that it was suspicious. The fire affected at least 1,350 flights to and from the airport and the impact is expected to last days. After power was restored, arrivals and departures resumed at the airport.
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