Indonesia on Friday said that design flaws, a lack of oversight by U.S. regulators and errors by both the crew and ground staff were all behind what brought down a Lion Air 737 MAX jet almost a year ago, killing all 189 people on board.

In its final report on the Oct. 29, 2018 crash, Indonesia regulators on Friday made recommendations to Boeing (BA) - Get Report , Lion Air, the U.S. Federal Aviation Administration and other agencies. 

The Lion Air crash preceded a second crash less than five months later involving an Ethiopian Airlines flight that killed all 157 passengers and crew and prompted a global grounding of Boeing's 737 MAX model and a crisis in confidence for the world's biggest jet maker.

Indonesian regulators criticized the design of the anti-stall system known as MCAS, which automatically pushed the plane's nose down, leaving pilots fighting for control.

The report also said "deficiencies" in the flight crew's communication and manual control of the aircraft contributed to the crash, as did alerts and distractions in the cockpit.

Shares of Boeing were down 0.81%, or $2.80 a share, at $341.75 in Friday trading. 

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