Boeing faced growing pressure on Monday, As Ethiopian Airlines said early studies of black boxes recovered from a crash that killed 157 people on March 10th, Showed 'clear similarities' with a Lion Air disaster in Indonesia last year.
Both planes were 737 MAX 8s and crashed minutes after take-off, With pilots reporting flight control problems. Boeing - the world's biggest planemaker - has grounded its MAX fleet A new automated system in the MAX model that guides the nose lower to avoid stalling is under scrutiny, Lawmakers asking how thoroughly regulators vetted the system, And how well pilots were trained for it when their airlines bought new planes.
The prestige of Boeing - one of the U.S.'
Biggest exporters - is at stake, The planemaker has stopped deliveries of its best-selling model.
Though Boeing says the MAX series is safe, and plans to roll out new software upgrades soon.
Media reports have put further pressure on the firm, The Seattle Times said the company's safety analysis of a new control system had crucial flaws.
And the Wall Street Journal reports U.S. authorities are investigating the Federal Aviation Administration's approval of the 737 MAX jetliners.
Boeing shares dropped 10 percent last week and wiped almost $25 billion off its market share.
Stocks slid another 3 and a half percent in early trade Monday to $365.60.