Only by late on Friday did a few flights resume, mainly to repatriate dislocated passengers.
London Heathrow’s unprecedented blackout on Friday has put the airport’s reliance on potentially vulnerable infrastructure into focus, at a time when the biggest UK hub is lobbying for an ambitious expansion plan.
A fire late Thursday at a nearby electrical substation cut off the power supply to Heathrow, bringing flights to a standstill for almost all of Friday. While backup systems kicked in, they only allow the hub to land some aircraft and evacuate passengers, but not to support full operations.
