Boeing 737 Max

Boeing CEO Dennis Muilenburg testifies before a Senate committee last week on the 737 Max plane crashes. A lawmaker asked him if he was taking a cut in pay, prompting the CEO to give up his bonuses. Mandel Ngan/AFP via Getty Images hide caption

Boeing Company President and Chief Executive Officer Dennis Muilenburg, right, and Boeing Commercial Airplanes Vice President and Chief Engineer John Hamilton faced intense questioning about what the company knew and when. Andrew Harnik/AP hide caption

Family members hold photos of victims killed on Ethiopian Airlines Flight 302 and Lion Air Flight 610 on Tuesday. Susan Walsh/AP hide caption

Boeing President and CEO Dennis Muilenburg appeared before the Senate Transportation Committee on future of the grounded 737 Max on Tuesday. Andrew Harnik/AP hide caption

Relatives of passengers of the crashed Lion Air jet check personal belongings retrieved from the waters where the airplane crashed, at Tanjung Priok Port in Jakarta, Indonesia, last October. Tatan Syuflana/AP hide caption

All Boeing 737 Max aircraft are grounded while the manufacturer fixes a deadly defect in their flight control system. These Southwest Airlines planes were parked in Victorville, Calif., in March. Mark Ralston/AFP/Getty Images hide caption

A grounded Boeing 737 Max sits in a parking area adjacent to Boeing Field in Seattle. Federal safety officials said on Thursday that Boeing should consider how cockpit confusion can slow the response time of pilots. Elaine Thompson/AP hide caption

Boeing will delay release of its 777X long-haul jet, complicating Qantas Airways' plans to introduce the world's longest commercial flight — from Sydney to London — in 2023. Richard Drew/AP hide caption

Capt. Chesley "Sully" Sullenberger, accompanied by other pilots and former FAA administrator Randy Babbitt, speaks during a House Committee on Transportation and Infrastructure hearing on the status of the Boeing 737 Max in Washington, D.C. Andrew Harnik/AP hide caption

Boeing Chief Executive Officer Dennis Muilenburg speaks at the Boeing Annual Shareholders Meeting on Friday in Chicago. Pool/Getty Images hide caption

A Boeing employee works on the fuselage of a 737 Max 9 test plane at the company's factory in Renton, Wash., on March 14. Orders for durable goods jumped 2.7% last month, fueled in part by strong demand for commercial aircraft. Stephen Brashear/Getty Images hide caption