
Fire alarm at United Airlines HQ in Chicago's Willis Tower prompts nationwide ground stop

Aruna Shantha
25-Jul-2025 05:57:54
A fire alarm at United Airlines headquarters at the Willis Tower in Illinois, Chicago sparked a nationwide ground stop for all United flights on Thursday.
A fire alarm at United Airlines headquarters at the Willis Tower in Illinois, Chicago sparked a nationwide ground stop for all United Airlines flights on Thursday. The Federal Aviation Administration (FAA) said in an advisory that the ground stop is in effect for all airports owing to a fire alarm at United's Network Operations Center at Willis Tower.
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