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Boeing tells lawmakers his 737 Max's safety ratings don't reach



Dennis Müllenburg, CEO of Boeing Co., spoke during a hearing at the Senate Committee on Trade, Science and Transportation in Washington, D.C., USA, on Tuesday, October 29, 2019.

Andrew Harrer | Bloomberg | Getty Images

Boeing executives told deputies in a tense hearing on Capitol Hill on Tuesday that the company made the mistake of developing its troubled 737 Max, a worldwide airplane after two crashes, killed 346 people.

It was Boeing's most public acknowledgment that this

In more than a two-hour hearing before the Senate Trade Committee, lawmakers defeated Boeing Executive Director Dennis Mullenburg in the first of their two congressional appearances this week for the two air crashes . Family members of the victims of the disaster were present, at one point posting large pictures of their loved ones.

Sep. Mary Cantwell, a Washington Democrat who produces the 737 Max, asked Müllenburg and the commercial aircraft's chief engineer if his assumptions and safety estimates were wrong.

"In the background, yes," Chief Engineer John Hamilton said in a hearing with the Senate Committee on Commerce. This is the first time Boeing executives have testified before Capitol Hill lawmakers.

A flight management system known as MCAS is controversial, which malfunctions in both fields because it received incorrect data from a defective sensor. The sensor measures the angle of attack or the angle of the plane relative to the incoming air. If the nose is pointed too high, the aircraft may stop so that the system automatically pushes the nose of the aircraft down.

In the case of the two crashes ̵

1; the Lion Air Flight 610 that went down into the Java Sea just a year ago today and the Ethiopian Airlines crash in March – pilots battled the system that repeatedly pressed the nose of the planes down.

Hamilton stated that Boeing did not "feel" a specific intent to activate the system due to an angle problem

The FAA last week shut down a maintenance facility in Florida that was working on one of the Lion Air sensors.

Boeing was heavily criticized for its assumptions about the aircraft, including the overestimation of average pilots' ability to fly aircraft safely against the background noise of the cockpit signals generated by the Lion Air jet.

"We relied on these longstanding industry standards for pilot response," Mullenburg said, adding that this was an area where "we found a shortfall." [19659002] Boeing's shares were little changed in early afternoon trading.


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