Inspections of some older Boeing jets have turned up structural cracks in more than three dozen of them, raising a new safety issue for the company, which is already dealing with two deadly crashes involving a newer version of the same plane.
Boeing said Thursday that airlines worldwide have inspected 810 planes following an order from U.S. safety regulators, and 38 - or 5% - had "findings" that will require repairs.
Airlines are under orders to inspect certain Boeing 737 NG planes for cracking in a part that helps keep wings attached to the fuselage.
The NG is being replaced by the 737 Max, which has been grounded since March.
Boeing isn't identifying which airlines found problems, but Brazil's Gol grounded 11 planes and U.S.-based Southwest Airlines grounded two.
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