SALT LAKE CITY — The National Transportation Safety Board is investigating after United Airlines flight 1093 from Denver to Los Angeles was diverted to Salt Lake City last week due to a crack in one of the layers of the plane's windshield.

The Boeing 737-8 departed Denver International Airport at 5:51 a.m. Thursday. While cruising over eastern Utah, a crack on the windscreen developed, according to the NTSB.

"On Thursday, United flight 1093 landed safely in Salt Lake City to address damage to its multilayered windshield," the NTSB said in a statement obtained by Scripps News. "We arranged for another aircraft to take customers to Los Angeles later that day, and our maintenance team is working to return the aircraft to service."

According to officials, aircraft windshields are designed t

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