The Boeing 737 Max airplane on the production line at the company's manufacturing facility in Renton, Washington, seen in 2015.
Mandatory Credit: David Ryder/Bloomberg/Getty Images
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Boeing faces new safety alert over earlier generation of 737s
The US Federal Aviation Administration has urged airlines to inspect so-called door plugs on an earlier version of Boeing 737 airplanes, after one blew out of the side of the newer Max model during an Alaska Airlines flight earlier this month.
