Boeing Co. conceded Thursday that its anti-stall software bears some of the blame in the deadly crashes of two new 737 MAX airliners and promised that a patch engineers have spent months developing will prevent any recurrences.

“The history of our industry shows most accidents are caused by a chain of events; this again is the case here, and we know we can break one of the chain links in these two accidents,” CEO Dennis Muilenburg said in a statement after Ethiopian authorities issued an update on their investigation into the March 10 crash outside the capital of Addis Ababa that killed all 157 people. “It’s our responsibility to eliminate this risk. We own it and we know how to do it.”