Boeing's CEO appears before Senate panel as new whistleblower emerges

US lawmakers are expected to press Boeing's chief executive Tuesday about the company's latest plan to fix its manufacturing problems, and relatives of people who died in two crashes of Boeing 737 Max jetliners plan to be in the room, watching him.

CEO David Calhoun is scheduled to appear before the Senate investigations subcommittee, which is chaired by Sen. Richard Blumenthal, D-Conn., a Boeing critic.

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.

Sam Mohawk, a quality assurance investigator at the 737 assembly plant near Seattle, claims Boeing hid evidence of the situation after the Federal Aviation Administration informed the company a year ago that it would inspect the plant.

Once Boeing received such a notice, it ordered the majority of the (nonconfirming) parts that were be