Travellers are cautioned to anticipate flight disruptions through the end of the week due to a significant breakdown in the UK’s air traffic control system, occurring on one of the year’s peak travel days.
A glitch within the National Air Traffic Services (Nats) left thousands waiting at the gates as flight plans had to be processed manually on Monday morning.
By the early afternoon, over 500 flights had been grounded, and many more postponed, trapping numerous travellers overseas without a return flight to the UK for potentially a week.
Many found themselves on planes that remained on the tarmac for extended periods, while others reached the airport only to discover their flights were either cancelled or postponed by as much as 12 hours.
On this August bank holiday, nearly a million people were anticipated to transit through UK airports, with 3,049 outbound flights and another 3,054 set to land.
However, just past noon, NATS declared a national “breakdown in the flight planning mechanism”, necessitating manual data input by controllers. This substantially curtailed the volume of flights allowed to depart and land.
By the early afternoon, data indicated significant delays: 78% of flights at Heathrow and 74% at Gatwick faced interruptions
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Nats stated they had “pinpointed and resolved” the problem by around 3 p.m. However, Transport Secretary Mark Harper cautioned that “flight operations continue to be impacted.”
Home Secretary Suella Braverman encouraged affected travellers to reach out to their respective airlines. She noted, “I am fully aware of the inconvenience this may cause to those awaiting arrivals and departures in the UK. I deeply empathize with the disruptions they might be facing.”
Juliet Kennedy, Nats Operations Director, commented on Monday evening that the malfunction would undergo a “comprehensive review”. She emphasized that both inbound and outbound flights were scaled down to prioritize safety, adding that “achieving normal flight operations will require time, and our collaboration with airlines and airports is ongoing to rectify the situation.”
Insiders in the security sector indicated that the glitch seemed to be a bona fide technical issue and was not attributed to cyberattacks or any adversarial foreign entities.
Top professionals in the aviation sector pointed out that restoring standard services would necessitate relocating aircraft and granting pilots adequate rest periods.
Joel Stansfield, the head of the Independent Pilots Association, which speaks for commercial pilots, advised travellers to brace for more delays in the “upcoming days”. He stated, “There are strict legal restrictions on pilot working hours to maintain safety and reduce fatigue. I anticipate that reconciling these constraints with rescheduled flight operations will pose challenges in the days ahead.
