737 Max

Dennis A. Muilenburg
Chairman, President, and
Chief Executive Officer
The Boeing Company
100 North Riverside
Chicago, IL 60606
Dear Mr. Muilenburg:
On April 4, 2019 you somewhat belatedly released a statement that “We at Boeing are sorry for the lives lost in the recent 737 MAX accidents.” You added that a preliminary investigation made it “apparent that in both flights” the MCAS “activated in response to erroneous angle of attack information.”

To understand the enormity of the Boeing 737 Max 8 crashes (Lion Air 610 and Ethiopian Airlines 302) that took a combined total of 346 lives, it is useful to look at past events and anticipate future possible problems.