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Heathrow Airport in the UK responded well to an outage that occurred in March, according to an internal review

Heathrow Airport in London responded well to the major power outage that occurred in March, forcing Europe's busiest airport to close for nearly a full day. This was concluded by a report commissioned by Heathrow Airport on Wednesday.

The closure of Heathrow on March 21, cost airlines tens and millions of pounds, and left hundreds of thousands passengers stranded. The incident also raised concerns about the resilience and stability of Britain's transport infrastructure.

The evidence shows that Heathrow took the right decisions under extremely difficult circumstances. While the disruption on that day was substantial, other choices would not have changed the outcome materially," said former Transport Minister Ruth Kelly, the author of the review.

The airport had contingency planning in place. The report also highlights the importance of further planned investments in energy resilience to reduce the impact of similar events in future.

A separate report by the National Energy System Operator published earlier in this month said that it was still unclear what caused a fire to break out at an electricity substation nearby, which forced Heathrow Airport's closure. The police have stated that the fire is not suspicious.

The power outage caused a stir among passengers, the government and airlines. They questioned why Heathrow had to close all terminals and why it was 18 hours before power was restored.

The review included 28 recommendations. These included fostering better understanding between airports and the power distributor SSEN. It also recommended improving the monitoring of safety systems that are critical to the airport, and assessing whether additional backup generators would improve resilience. Reporting by Sachin Ravikumar, editing by William James

(source: Reuters)