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'The United Kingdom's biggest airport, Heathrow Airport, is experiencing a significant power outage due to a fire at an electrical substation that supplies the airport's power and it will be closed until midnight on March 21.

'To maintain the safety of our passengers and colleagues, Heathrow will be closed until 23:59 on 21 March ...

'Eurocontrol, which manages air traffic control operations across Europe, said on its operations website that no arrivals were being allowed at Heathrow due to the power outage and there were diversion plans in place for flights.

'The London Fire Brigade said its crews were tackling the fire in Hayes in west London and had evacuated about 150 people as a precaution'.

Good grief. Shoutout to the firies, and line personnel from the power company and airport working to get this resolved.

Cyber is not your only source of risk.
https://www.abc.net.au/news/2025-03-21/heathrow-airport-closes-after-power-outage-substation-fire/105081908