A lawsuit opposite Boeing was filed in U.S. sovereign justice on Thursday in what seemed to be a initial fit over a Mar 10 Ethiopian Airlines 737 MAX pile-up that killed 157 people.

The lawsuit was filed in Chicago sovereign justice by a family of Jackson Musoni, a citizen of Rwanda, and alleges that Boeing, that manufactures a 737 MAX, had defectively designed a programmed moody control system.

The 737 MAX planes were grounded worldwide following a Ethiopian Airlines disaster, that came 5 months after a Lion Air pile-up in Indonesia that killed 189 people.

Boeing pronounced on Wednesday it had reprogrammed program on a 737 MAX to forestall erring information from triggering an anti-stall complement that is confronting ascent inspection in a arise of dual lethal nose-down crashes in a past 5 months.

The planemaker pronounced a anti-stall system, that is believed to have regularly forced a nose reduce in during slightest one of a accidents, in Indonesia final October, would usually do so once per eventuality after intuiting a problem, giving pilots some-more control.