737 Max

James Palinsad/Flickr / Creative Commons License 2.0

WASHINGTON -- Boeing CEO Dennis Muilenburg faced withering questions from senators Tuesday about two crashes of 737 Max jets and whether the company concealed information about a critical flight system.

Elaine Thompson/AP

A panel of international aviation regulators found that Boeing withheld key information about the 737 Max from pilots and regulators, and the Federal Aviation Administration lacked the expertise to understand an automated flight system implicated in two deadly crashes of Max jets.