UK government orders probe into Heathrow shutdown that sparked concern over energy resilience

LONDON (AP) — The British government on Saturday ordered an investigation into the country's “energy resilience” after an electrical substation fire shut Heathrow Airport for almost a day and raised concerns about the U.K.'s ability to withstand disasters or attacks on critical infrastructure.

While Heathrow Airport said it was now “fully operational,” thousands of passengers remained stuck, and airlines warned that severe disruption will last for days as they scramble to relocate planes and crews and get travelers to their destinations.

Inconvenienced passengers, angry airlines and concerned politicians all want answers about how one seemingly accidental fire could shut down Europe’s busiest air hub.

“This is a huge embarrassment for Heathrow airport. It’s a huge embarrassment for the country that a fire in one electricity substation can have such a devastating effect," said Toby Harris, a Labour Party politician who heads the National Preparedness Commission, a group that campaigns to improve resilience.

Energy Secretary Ed Miliband said he'd asked the National Energy System Operator, which oversees U.K. gas and electricity networks, to "urgently investigate" the fire, “to understand any wider lessons to be learned on energy resilience for critical national infrastructure."

It is expected to report initial findings within six weeks.

“The government is determined to do everything it can to prevent a repeat of what happened at Heathrow," Miliband said.

Heathrow announced its own review, to be led by former transport secretary Ruth Kelly, a member of the airport's board.

Heathrow Chairman Paul Deighton said Kelly will look at “the robustness and execution of Heathrow’s crisis management plans, the airport’s response during the incident and how the airport recovered.”

More than 1,300 flights were canceled and some 200,000 people stranded Friday after an overnight fire at a substation 2 miles (3.2 kilometers) away cut power to Heathrow, and to more than 60,000 properties.

Heathrow said Saturday it had “added flights to today’s schedule to facilitate an extra 10,000 passengers." British Airways, Heathrow’s biggest airline, said it expected to operate about 85% of its 600 scheduled flights at the airport Saturday.

While many passengers managed to resume stalled journeys, others remained in limbo.

Laura Fritschie from Kansas City was on vacation with her family in Ireland when she learned that her father had died. On Saturday she was stranded at Heathrow after her BA flight to Chicago was canceled at the last minute.

“I’m very frustrated," she said. “This was my first big vacation with my kids since my husband died, and ... now this. So I just want to go home.”

Residents in west London described hearing a large explosion and then seeing a fireball and clouds of smoke when the blaze ripped through the substation. The fire was brought under control after seven hours, but the airport was shut for almost 18 hours. A handful of flights took off and landed late Friday.

Police said they do not consider the fire suspicious, and the London Fire Brigade said its investigation would focus on the substation's electrical distribution equipment.

Still, the huge impact of the fire left authorities facing questions about Britain’s creaking infrastructure, much of which has been privatized since the 1980s. The center-left Labour government has vowed to improve the U.K.'s delay-plagued railways, its aged water system and its energy network, promising to reduce carbon emissions and increase energy independence through investment in wind and other renewable power sources.

“The last 40, 50 years we’ve tried to make services more efficient,” said Harris. “We’ve stripped out redundancy, we’ve simplified processes. We’ve moved towards a sort of ‘just in time’ economy. There is an element where you have to make sure you’re available for ‘just in case.’ You have to plan for things going wrong.”

Heathrow is one of the world’s busiest airports for international travel, and saw 83.9 million passengers last year.

Chief executive Thomas Woldbye said he was “proud” of the way airport and airline staff had responded.

“The airport didn’t shut for days. We shut for hours,” he told the BBC.

Woldbye said Heathrow's backup power supply, designed for emergencies, worked as expected, but it wasn’t enough to run the whole airport, which uses as much energy as a small city.

“That’s how most airports operate," said Woldbye, who insisted “the same would happen in other airports" faced with a similar blaze.

But Willie Walsh, who heads aviation trade organization IATA, said the episode “begs some serious questions.”

“How is it that critical infrastructure – of national and global importance – is totally dependent on a single power source without an alternative? If that is the case, as it seems, then it is a clear planning failure by the airport,” he said.

Walsh said “Heathrow has very little incentive to improve” because airlines, not the airport, have to pay the cost of looking after disrupted passengers.

Friday’s disruption was one of the most serious since the 2010 eruption of Iceland’s Eyjafjallajokull volcano, which shut Europe’s airspace for days.

Passengers on about 120 flights were in the air when Friday's closure was announced and found themselves landing in different cities, and even different countries.

Mark Doherty and his wife were halfway across the Atlantic when the inflight map showed their flight from New York’s John F. Kennedy Airport to Heathrow was returning to New York.

“I was like, you’re joking,” Doherty said.

He called the situation “typical England — got no back-up plan for something happens like this. There’s no contingency plan.”

Associated Press journalist Kwiyeon Ha at Heathrow Airport contributed to this report.

Officials walk through the North Hyde electrical substation in London on Saturday March 22, 2025, which caught fire Thursday night. (Maja Smiejkowska/PA via AP)

People watch an Emirates plane at Heathrow Airport in London on Saturday March 22, 2025, after flights resumed at the west London airport on Friday evening. (Maja Smiejkowska/PA via AP)

Travellers arrive at Terminal 2 as Heathrow Airport slowly resumes flights after a fire cut power to Europe's busiest airport in London, Saturday, March 22, 2025.(AP Photo/Kirsty Wigglesworth)

Passengers in the arrivals hall at Heathrow Terminal 5 in London, Saturday March 22, 2025, after flights resumed at the airport. (Maja Smiejkowska/PA via AP)

A man takes a photo of the flight information display in the arrivals hall at Heathrow Terminal 5 in London, Saturday March 22, 2025, after flights resumed at the airport. (Maja Smiejkowska/PA via AP)

A British Airways plane approaches landing as Heathrow Airport slowly resumes flights after a fire cut power to Europe's busiest airport in London, Saturday, March 22, 2025.(AP Photo/Kirsty Wigglesworth)

Travellers wait outside the Terminal as Heathrow Airport slowly resumes flights after a fire cut power to Europe's busiest airport in London, Saturday, March 22, 2025.(AP Photo/Kirsty Wigglesworth)

Travellers check the information board in London, Saturday, March 22, 2025, as Heathrow Airport slowly resumes flights after a fire cut power to Europe's busiest airport.(AP Photo/Kirsty Wigglesworth)

The airport arrivals board at Terminal 5 as Britain's Heathrow Airport has closed for the full day Friday after an electrical substation fire knocked out its power, disrupting flights for hundreds of thousands of passengers at one of Europe's biggest travel hubs in London, Friday, March 21, 2025.(AP Photo/Kin Cheung)

A British Airways plane is parked at Terminal 5 as Britain's Heathrow Airport has closed for the full day Friday after an electrical substation fire knocked out its power, disrupting flights for hundreds of thousands of passengers at one of Europe's biggest travel hubs in London, Friday, March 21, 2025.(AP Photo/Kin Cheung)

Workers are seen as smoke rises from the North Hyde electrical substation, which caught fire last night, leading to the closure of the Heathrow Airport, in London, Friday March 21, 2025.(AP Photo/Kirsty Wigglesworth)

A handwritten sign at a Heathrow Airport tube station in London indicates the airport is closed on Friday March 21, 2025, following a fire at the North Hyde electrical substation the previous night.(AP Photo/Alberto Pezzali)

A plane is prepared whilst another airplane approaches landing at Heathrow Airport after a fire at an electrical substation shuttered Europe's busiest air travel hub in London, Friday, March 21, 2025.(AP Photo/Alberto Pezzali)

A traveller arrives at Terminal 5 as Heathrow Airport slowly resumes flights after a fire cut power to Europe's busiest airport in London, Saturday, March 22, 2025.(AP Photo/Kirsty Wigglesworth)

Travellers wait at Terminal 5 as Heathrow Airport slowly resumes flights after a fire cut power to Europe's busiest airport in London, Saturday, March 22, 2025.(AP Photo/Kirsty Wigglesworth)

Travellers arrive at Terminal 5 as Heathrow Airport slowly resumes flights after a fire cut power to Europe's busiest airport in London, Saturday, March 22, 2025.(AP Photo/Kirsty Wigglesworth)

Travellers arrive at Terminal 5 as Heathrow Airport slowly resumes flights after a fire cut power to Europe's busiest airport in London, Saturday, March 22, 2025.(AP Photo/Kirsty Wigglesworth)

Travellers arrives at Terminal 5 as Heathrow Airport slowly resumes flights after a fire cut power to Europe's busiest airport in London, Saturday, March 22, 2025.(AP Photo/Kirsty Wigglesworth)

NEW YORK (AP) — Thousands of nurses in three hospital systems in New York City went on strike Monday after negotiations through the weekend failed to yield breakthroughs in their contract disputes.

The strike was taking place at The Mount Sinai Hospital and two of its satellite campuses, with picket lines forming. The other affected hospitals are NewYork-Presbyterian and Montefiore Medical Center in the Bronx.

About 15,000 nurses are involved in the strike, according to New York State Nurses Association.

“After months of bargaining, management refused to make meaningful progress on core issues that nurses have been fighting for: safe staffing for patients, healthcare benefits for nurses, and workplace violence protections,” the union said in a statement issued Monday. “Management at the richest hospitals in New York City are threatening to discontinue or radically cut nurses’ health benefits.”

The strike, which comes during a severe flu season, could potentially force the hospitals to transfer patients, cancel procedures or divert ambulances. It could also put a strain on city hospitals not involved in the contract dispute, as patients avoid the medical centers hit by the strike.

The hospitals involved have been hiring temporary nurses to try and fill the labor gap during the walkout, and said in a statement during negotiations that they would “do whatever is necessary to minimize disruptions.” Montefiore posted a message assuring patients that appointments would be kept.

“NYSNA’s leaders continue to double down on their $3.6 billion in reckless demands, including nearly 40% wage increases, and their troubling proposals like demanding that a nurse not be terminated if found to be compromised by drugs or alcohol while on the job," Montefiore spokesperson Joe Solmonese said Monday after the strike had started. "We remain resolute in our commitment to providing safe and seamless care, regardless of how long the strike may last.”

New York-Presbyterian accused the union of staging a strike to “create disruption,” but said in a statement that it has taken steps to ensure patients receive the care they need.

"We’re ready to keep negotiating a fair and reasonable contract that reflects our respect for our nurses and the critical role they play, and also recognizes the challenging realities of today’s healthcare environment,” the statement said.

The work stoppage is occurring at multiple hospitals simultaneously, but each medical center is negotiating with the union independently. Several other hospitals across the city and in its suburbs reached deals in recent days to avert a possible strike.

The nurses’ demands vary by hospital, but the major issues include staffing levels and workplace safety. The union says hospitals have given nurses unmanageable workloads.

Nurses also want better security measures in the workplace, citing incidents like a an incident last week, when a man with a sharp object barricaded himself in a Brooklyn hospital room and was then killed by police.

The union also wants limitations on hospitals’ use of artificial intelligence.

The nonprofit hospitals involved in the negotiations say they’ve been working to improve staffing levels, but say the union’s demands overall are too costly.

Nurses voted to authorize the strike last month.

Both New York Gov. Kathy Hochul and Mayor Zohran Mamdani had expressed concern about the possibility of the strike. As the strike deadline neared, Mamdani urged both sides to keep negotiating and reach a deal that “both honors our nurses and keeps our hospitals open.”

“Our nurses kept this city alive through its hardest moments. Their value is not negotiable,” Mamdani said.

State Attorney General Letitia James voiced similar support, saying "nurses put their lives on the line every day to keep New Yorkers healthy. They should never be forced to choose between their own safety, their patients’ well-being, and a fair contract.”

The last major nursing strike in the city was only three years ago, in 2023. That work stoppage, at Mount Sinai and Montefiore, was short, lasting three days. It resulted in a deal raising pay 19% over three years at those hospitals.

It also led to promised staffing improvements, though the union and hospitals now disagree about how much progress has been made, or whether the hospitals are retreating from staffing guarantees.

Nurses strike outside Mount Sinai West Hospital, Monday, Jan. 12, 2026, in New York. (AP Photo/Yuki Iwamura)

Nurses strike outside Mount Sinai West Hospital, Monday, Jan. 12, 2026, in New York. (AP Photo/Yuki Iwamura)

Nurses strike outside Mount Sinai West Hospital, Monday, Jan. 12, 2026, in New York. (AP Photo/Yuki Iwamura)

Nurses strike outside Mount Sinai West Hospital, Monday, Jan. 12, 2026, in New York. (AP Photo/Yuki Iwamura)

FILE - A medical worker transports a patient at Mount Sinai Hospital, April 1, 2020, in New York. (AP Photo/Mary Altaffer, File)