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Since 2017, drones and cyber-outages have exposed aviation weaknesses.

The sighting of two or more large drones near Copenhagen Airport late on Monday stopped all take-offs, landings, and flight operations for almost four hours. Denmark linked the drones to a number of suspected Russian drone intrusions and other disruptions in Europe.

Since 2017, airports have been repeatedly affected by a series of drone sightings, digital outages and other disruptions. These incidents bypass core flight safety systems and instead impact choke points like check-in/boarding systems, power infrastructure, and airfield perimeters. This causes ripple effects throughout networks.

British Airways London hubs suffer an IT failure on May 27, 2017.

British Airways cancelled all flights to and from Heathrow Airport, Europe's largest airport, as well as Gatwick, on the first holiday weekend day due to a power problem in a data center that affected 75,000 passengers.

On the morning of May 27, a power surge hit BA's flight and baggage systems, as well as its communication systems. The surge was so powerful that it rendered the backup systems ineffective. Delays continued into the next Monday while systems were restored.

Dec 19, 2018: Drone sightings at London Gatwick.

Gatwick Airport in London was shut down for three days by persistent drone reports during the peak travel period leading up to Christmas. Around 140,000 passengers were affected, and around 1,000 flights. This was the largest disruption since Icelandic volcanic ash clouds in 2010.

Gatwick was invaded by the British army to deploy "specialist" equipment, as commercially available anti-drone capabilities were not yet available.

It was the longest disruption ever experienced at an airport of Gatwick's size. Dubai airport was closed a few times in 2016 because of unauthorized drone activity. However, the longest closure was less than two hours.

Jan 11, 2023: Safety system failure in the U.S.

After a system failure, the Federal Aviation Administration (FAA), ordered a nationwide stop for about 90 minutes that disrupted over 11,000 U.S. flight.

The FAA's system alerts pilots of hazards such as snow, volcanic ash, or birds in the vicinity of an airport. This system also informs pilots about closed runways, temporary air restrictions and volcanic ash.

Aug. 28, 2023: NATS flight data glitch in the United Kingdom

UK air traffic control restricted flows following a processing error in flight plans, forcing manual entry. Around 1,500 flight cancellations occurred and the disruption continued into the next day.

Windows global outage on July 19, 2024 due to faulty CrowdStrike update

CrowdStrike, a global cybersecurity company, released faulty software that caused widespread Windows crashes. This affected many industries and caused over 5,000 flights to be grounded worldwide.

Delta Air Lines and Ryanair have reported delays and disruptions in the United States, Asia, and Europe.

U.S. cancellations exceeded 2,200 on the first day, with almost 7,000 delays. Some airlines took several days to recover their operations.

London Heathrow airport is closed for the day on March 21, 2025 due to a fire in a substation

Heathrow Airport in Britain, the fifth busiest airport in the world, was closed for 18 hours following a massive fire that knocked out power at an electrical substation nearby. This left over 200,000 passengers stranded and cost airlines millions of dollars.

Airport was due to fly up to 291,000 passengers on 1,351 flights, but the planes were diverted from London to other airports across Europe and Britain.

Sept 10, 2025 - Drone incursion in Poland shuts down several airports

On the 10th of September, several Polish airports were temporarily shut down when approximately 21 suspected Russian drones flew into Polish airspace.

Airports in Warsaw Chopin, Modlin, Rzeszow, and Lublin, located in the east of Poland, were temporarily closed, before they reopened.

Sept 20, 2025: Cyberattack affecting multiple EU hubs

Cyberattacks on Collins Aerospace (owned by RTX), a provider of check-in and boarding system, have disrupted airport operations in several European cities, including Heathrow Airport, Berlin Airport, and Brussels Airport.

Due to persistent problems, Brussels Airport cancelled 25 flights on Saturday and Sunday as well as 50 flights on Monday.

Sept. 22, 2025: Drone incursions into Danish and Norwegian airspace

The drones were causing delays and diversions, causing tens thousands of passengers to be stranded.

The Norwegian authorities also closed the airspace of Oslo Airport for three hours following the sighting of a drone.

(source: Reuters)