Travelers and commenters tried to infer what prompted the FAA’s nationwide ground stop. One passenger at LaGuardia said boarding was continuing while staff offered no further updates. Suggestions ranged from an air-traffic-control frequency problem to a radar outage, but others said weather radar remained accessible and questioned whether a national radar failure had actually occurred. One commenter suspected a brief outage or a problem with a website rather than radar itself; another speculated about a cyberattack, while a reply challenged that theory.
Commenters also compared the stop with earlier aviation disruptions. One recalled the 2023 outage of the FAA’s pilot-notification system, which halted U.S. departures for several hours, and another listed it alongside 9/11 and the current event as a rare nationwide shutdown. Others stressed that the situations differed: after 9/11, aircraft already in the air were directed to land, whereas this stop was described as preventing departures without ordering airborne planes down. A reference to air-traffic systems using floppy disks prompted a suggestion that outdated technology might be relevant, but another commenter rejected that connection.
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