US accident investigators said they remain in the dark about who performed the work on the panel of a Boeing Co. jet that failed in January, despite high-level pleas to the company and interviews at the factory where the fateful removal of the part was performed.
National Transportation Safety Board Chair Jennifer Homendy said she made a direct request to Boeing Chief Executive Officer Dave Calhoun last week, according to a letter to Senators on Wednesday. Her team has also been conducting interviews with workers at the company’s Renton, Washington, factory.
