Jazmin Li
Hundreds of passengers experienced delays and cancellations at Newark Liberty International Airport, one of the nation's busiest airports, due to multiple issues, including air traffic controller shortages, outdated technology, bad weather, and the closure of a busy runway. This resulted in a week-long meltdown, causing significant disruptions and highlighting the challenges of an understaffed system. The Federal Aviation Administration has been working to alleviate the situation by improving telecommunications and deploying backup systems.
| Characteristics | Values |
|---|---|
| Location | Newark Liberty International Airport, New Jersey |
| Cause | Staffing shortages, bad weather, outdated technology, runway closure |
| Impact | Delays, cancellations, trauma to controllers, scrutiny on air traffic control system |
| Stakeholders | Passengers, controllers, airlines, Senate Minority Leader Chuck Schumer |
| Response | Slow departures and arrivals, improve telecommunications, deploy backup system |
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What You'll Learn
Staffing shortages
The issue of staffing shortages in air traffic control is not unique to Newark. United's CEO, Scott Kirby, highlighted that the Federal Aviation Administration (FAA) is approximately 3,000 air traffic controllers short, and this shortage is expected to cause delays across the country. The highly skilled nature of the job makes it challenging to quickly fill these positions.
The consequences of staffing shortages in air traffic control can be severe. In one instance at Newark, air traffic controllers lost both radar and communications with planes, leaving them unable to communicate with pilots for up to 90 seconds. This duration is considered "alarming" in the context of air travel, underscoring the critical need for adequate staffing levels.
To address the staffing shortages, the FAA has taken steps to improve telecommunications connections and technology, as well as deploying backup systems. These measures aim to alleviate disruptions and enhance the overall air traffic control system. However, the underlying issue of a lack of personnel remains a pressing concern, requiring long-term solutions to ensure the safe and efficient management of air traffic.
The impact of staffing shortages is further exacerbated by other factors, such as aging technology, bad weather, and runway closures. The combination of these issues can create a cascade of delays and cancellations, affecting thousands of passengers and highlighting the urgent need for comprehensive solutions to address staffing shortages in the aviation industry.
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Technology failures
In another instance, Newark Liberty International Airport in New Jersey underwent a week-long meltdown due to technology failures and staffing shortages. This resulted in lengthy delays and cancellations, with United Airlines removing numerous flights from its schedule. The issue was attributed to the failure of copper wiring transmitting data to Newark's approach control, causing a loss of radar and communication with aircraft. The Federal Aviation Administration (FAA) announced plans to upgrade technology and increase controller staffing to address these issues.
Austin-Bergstrom Airport in Texas also experienced delays of up to 90 minutes due to system outages and equipment failures at Newark and Atlanta. Radar screens went dark at the New York City area hub, and Hartsfield-Jackson Atlanta International issued a ground stop on Mother's Day due to equipment failure, causing overwhelmed air traffic controllers and significant delays.
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Delays and cancellations
On one particular occasion, air traffic controllers in Philadelphia, who were guiding planes to Newark, experienced a sudden communications crash. This left pilots unable to receive responses from the controllers, creating an alarming situation. The cause of the issue was attributed to a failure in the copper wiring that transmits information to Newark approach control. This incident was not isolated, with similar outages occurring twice before and exposing the outdated nature of the air traffic control system.
The consequences of these technical failures were significant. Not only did they result in delays and cancellations for thousands of customers, but they also took a toll on the controllers, with some taking leave due to trauma. The issues at Newark Airport were compounded by multiple factors, including staffing shortages, ageing technology, unfavourable weather conditions, and the closure of one of the airport's busiest runways. These factors collectively contributed to the extensive disruptions.
United Airlines, which operates a hub at Newark, has pointed to staffing shortages as a significant contributor to delays. The airline's CEO, Scott Kirby, stated that the Federal Aviation Administration (FAA) faced a shortage of about 3,000 air traffic controllers, and he predicted that this shortage would lead to delays across the country. Kirby emphasised the impact of these shortages specifically on Newark, attributing half a million delays in November to air traffic control shortfalls at the airport.
To address the disruptions at Newark, the FAA took steps to slow down departures and arrivals and implemented measures to enhance telecommunications connections and technology. A backup system was also deployed to prevent similar incidents from occurring in the future. Despite these efforts, the situation at Newark Airport underscores the urgent need for improvements and investments in the nation's air traffic control system to ensure safe and efficient travel for passengers.
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Runway closures
For example, at the time of writing, Newark Airport is experiencing significant delays and cancellations due to the closure of one of its three runways, Runway 4L-22R, for rehabilitation work. This is part of a $121 million project to improve infrastructure and comply with FAA standards. The closure of this busy runway, which handles nearly 47% of the airport's flight activity, has resulted in flight traffic being redirected to the airport's other runways, causing congestion and delays.
In addition to construction and rehabilitation work, runway closures can also be necessary for routine maintenance and inspections. For instance, Manchester Airport publishes dates when Runway 1, the most used runway, will be closed for maintenance, including line painting, drain clearing, and surface inspections. These closures typically occur at night to minimise the impact on flight operations.
While runway closures are sometimes unavoidable, they can have a significant impact on airport operations and cause disruptions for passengers. As such, airports typically try to minimise closures and schedule maintenance and construction work during periods of lower traffic to reduce the impact on flight operations and passenger experiences.
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Radar and communications blackout
Radar and communication blackouts at airports can have serious consequences, as evidenced by the recent events at Newark Liberty International Airport. On April 28, 2025, a 90-second radar and radio blackout occurred, leaving controllers with no way to communicate with pilots. This incident, which affected one of the world's busiest airports, caused significant distress to air traffic controllers, with some taking trauma leave.
During the blackout, a pilot is heard on audio recordings asking, "Approach, are you there?" five separate times over a span of 30 seconds before receiving a response. The loss of radar and radio communication meant that controllers could not see or control any aircraft in the sky, creating a dangerous situation.
The root cause of the blackout has been attributed to a loss of data feed from the STARS facility in New York, highlighting the aging infrastructure of the air traffic control network. The Federal Aviation Administration (FAA) acknowledged the issue, stating that their ""antiquated air traffic control system" was affecting their workforce. In response, the FAA announced plans for technical upgrades, including installing new fiber optic data lines to carry radar signals and adding three new high-bandwidth telecommunications connections to the STARS system.
The FAA also recognized the need for increased staffing to address the issue. Controllers at Newark Airport have faced challenges due to equipment outages and staffing shortages, prompting lawmakers to call for investigations and new funding. The relocation of Newark Liberty controllers from the New York TRACON to the Philadelphia Tower at Philadelphia International Airport has also contributed to unexpected troubles.
To prevent similar incidents from occurring in the future, federal officials have proposed a complete overhaul of the air traffic control system, including building new traffic control centers and replacing radars and software. These measures aim to address the years of 'neglect' the industry has faced and improve the safety and efficiency of air travel.
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Frequently asked questions
There have been multiple flight delays and cancellations due to air traffic controller staffing shortages, outdated technology, bad weather, and the closure of one of the airport's busiest runways.
Air traffic controllers lost radar and communications with planes, leaving them unable to communicate with pilots.
The communications blackout lasted for up to 90 seconds, an "alarming" amount of time when it comes to air travel.
The Federal Aviation Administration has been slowing down departures and arrivals and improving telecommunications connections, technology, and deploying a backup system.
Yes, there have been multiple recent equipment and telecommunications outages, including two similar outages that happened before the most recent incident.
