Boeing's CEO is appearing before a Senate panel as a new whistleblower emerges

Boeing's CEO is getting his day in front of Congress, and lawmakers are expected to have many questions about safety at the troubled aircraft company. CEO David Calhoun is scheduled to testify Tuesday in front of a Senate investigations subcommittee. It'll be his first appearance on Capitol Hill since a panel blew out of a Boeing 737 Max during an Alaska Airlines flight in January. Hours before Calhoun was set to appear, the Senate panel released a 204-page report with new allegations from a whistleblower who fears that “nonconforming” parts — ones that could be defective or aren’t properly documented — are going into 737 Max jets.