Airline regulators knew about Boeing 737 MAX nosedive issue 2yrs ago

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Meanwhile, officials investigating the Ethiopian Airlines Boeing 737 MAX crash have reportedly reached the same conclusion in their preliminary findings based on data retrieved from the plane's black box recorder.

The automated system - known as Maneuvering Characteristics Augmentation System, or MCAS - is suspected to have played a role in both the Ethiopian Airlines crash and last year's Lion Air crash, which killed 157 and 189 people, respectively.

U.S. government experts have been analysing details gathered by their Ethiopian counterparts for the past few days, the newspaper added, and the emerging consensus was relayed at a high-level briefing of the Federal Aviation Administration (FAA) on Thursday.

The MCAS lowers the aircraft's nose if it detects loss of airspeed specifically for 737 MAX.

A wrongful death lawsuit has been filed against Boeing for the company's role in the fatal crash of Ethiopia Airlines Flight 302 earlier this month.

The Federal Aviation Administration plans to revamp oversight of airplane development after the two deadly crashes of 737 Max 8 airplanes, according to testimony prepared for a Capitol Hill hearing on Wednesday.

Boeing met with top airline industry personnel and reporters just earlier this week to demonstrate proposed software updates that would make MCAS more hard to automatically engage and easier for pilots to control.

The planemaker said the anti-stall system, which is believed to have repeatedly forced the nose lower in at least one of the accidents, in Indonesia last October, would only do so once per event after sensing a problem, giving pilots more control.

737 Max planes were grounded worldwide after two of the jets crashed within the past five months, killing 345 people.

Those situations, however, were not listed in the flight manual, according to a copy from American Airlines seen by Reuters.

According to preliminary findings by Indonesian investigators, in the Lion Air disaster in October, pilots encountered nearly the exact set of "unusual" circumstances described in the EASA document.

TUI said on Friday that with no dates yet announced by Boeing for modifications of the aircraft, nor for approval of those changes by USA and European regulators, it was now planning for the grounding to last until mid-July.

TUI, which has 15 737 MAXs representing 10 percent of its fleet, said extra costs would include replacement aircraft, higher fuel costs, other disruption and negative trading impact, sending its shares down by around 10 percent.

Boeing has suggested using two existing cut-out switches could have prevented the Lion Air disaster, but it has also announced proposals to beef up the system and improve training.

(Michael Tewelde/AFP/Getty Images) People stand near collected debris at the crash site of Ethiopia Airlines near Bishoftu, southeast of Addis Ababa, Ethiopia, March 11, 2019. Boeing's 737 Max 10 has not yet entered service and it's unclear whether it will also receive the updates.

Sinnett said making the software updates to each plane will take about an hour and will begin immediately.

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