The Federal Aviation Administration briefly grounded all JetBlue flights early Tuesday after the airline requested a nationwide ground stop to deal with a short system outage, according to a notice posted to the agency’s website.

The ground stop lasted roughly 40 minutes before the FAA lifted it. JetBlue confirmed a brief system outage had affected operations, though the airline did not immediately specify which internal systems failed or what triggered the disruption.

The incident is the latest in a string of technology-related disruptions to hit the U.S. aviation system in recent years, raising persistent questions about the reliability of the aging infrastructure that keeps the country’s air travel network running.

Ground stops, while relatively routine for weather and air traffic control purposes, are less common when triggered by an airline’s own internal systems. When a carrier’s technology fails, airlines can lose the ability to process check-ins, track crew assignments, calculate aircraft weight and balance data, or communicate departure clearances. Any one of those failures can create cascading delays that ripple through a network for hours after the original problem is resolved.

Tuesday’s outage appeared limited in its immediate scope. The 40-minute window is relatively short compared to past airline technology failures. In 2016, a router failure at Delta Air Lines caused a system meltdown that stranded tens of thousands of passengers and cost the carrier an estimated $150 million. Southwest Airlines suffered a similar operational collapse in December 2022 when outdated scheduling software buckled under the strain of winter storm disruptions, leading to more than 16,000 canceled flights over several days.

JetBlue has faced its own operational challenges in recent years. The airline has worked to trim its route network and cut costs after posting significant losses in 2023 and 2024. A merger attempt with Spirit Airlines collapsed after a federal judge blocked it on antitrust grounds, leaving JetBlue to chart a leaner course on its own.

The FAA’s role in Tuesday’s event is worth examining closely. The agency does not initiate ground stops on behalf of airlines without a formal request. That means JetBlue’s own operations team made the call to ask for the stoppage, a decision that suggests the carrier believed flying under degraded systems posed enough of a risk to justify halting departures entirely. That is not a decision airlines take lightly, given the financial cost of grounding an entire fleet, even briefly.

The FAA has faced scrutiny of its own technology systems in recent years. A January 2023 outage of the agency’s Notice to Air Missions system, known as NOTAM, halted all U.S. departures for roughly 90 minutes and prompted congressional hearings. The Transportation Department’s inspector general has repeatedly flagged FAA technology modernization as a high-risk priority.

Aviation safety advocates have long argued that both the FAA and the airlines have underinvested in system redundancy. Redundant backups exist to prevent single points of failure from shutting down operations entirely. When a 40-minute outage at one airline is enough to ground every flight that carrier operates across the country, it suggests those redundancies either did not exist or did not function as designed.

JetBlue operates hundreds of flights daily across its network, which spans the United States, the Caribbean, and parts of Latin America and Europe. Passengers caught in the ground stop on Tuesday faced delays, and some connections were likely missed, though the relatively short duration of the stoppage likely limited the overall damage to the carrier’s schedule.

The FAA said in its posted notice that the ground stop was lifted once JetBlue confirmed its systems were back online. Neither the agency nor the airline provided detailed information about what caused the outage or what steps were taken to restore service.

For travelers, Tuesday’s disruption served as a reminder that modern air travel depends as much on software and data networks as it does on aircraft and runways. When those systems fail, even briefly, the consequences land squarely on passengers waiting at gates across the country.