- The Morning After: United Airlines grounded its new Airbus fleet over ‘no smoking’ signs Engadget
- United Airlines grounds Airbus A321neo fleet over antiquated no smoking sign law Engadget
- United grounded 5 planes because it couldn’t turn off their ‘No Smoking’ signs, breaking a strange FAA rule Yahoo! Voices
- United A321neo fleet grounded due to issue over passenger ‘No Smoking’ signs AeroTime
- United Airlines Reportedly Grounds Brand New Airbus A321neo Aircraft Because Pilots Can’t Turn Off the ‘No Smoking’ Signs paddleyourownkanoo.com
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