Failure pattern · United States · 2011–2024
Boeing 737 MAX: two crashes and a culture under scrutiny
Rushing to compete with Airbus, Boeing updated an old jet design rather than starting fresh. Software linked to two crashes killed 346 people, grounded the fleet for about 20 months, and cost Boeing over $20 billion.
By Shivam Bhandari · Reviewed 31 October 2026 · How we write
by the numbers
- Deaths in two crashes
- 346
- Grounding length
- about 20 months
- DOJ settlement (2021)
- about $2.5 billion
- Direct costs
- over $20 billion
What happened
In 2010–2011 Airbus launched the fuel-efficient A320neo and won large orders. Boeing chose to update its 1960s-era 737 with bigger engines instead of designing a new plane, partly so pilots could fly it without expensive simulator retraining. The engines changed the plane's handling, so Boeing added software called MCAS to push the nose down in certain conditions.
MCAS relied on a single sensor, and many pilots were not told about it. In October 2018 Lion Air Flight 610 crashed off Indonesia, and in March 2019 Ethiopian Airlines Flight 302 crashed near Addis Ababa — 346 people died in total. Regulators grounded the MAX worldwide in March 2019.
The MAX returned to US service in late 2020 after about 20 months. Boeing's CEO was replaced, it paid about $2.5 billion in a 2021 settlement with the US Justice Department, and direct costs exceeded $20 billion. A door-panel blowout on a new 737 MAX 9 in January 2024 renewed concerns about its quality culture.
Timeline
- 2011
Boeing launches the 737 MAX.
- 2018
Lion Air crash.
- 2019
Ethiopian Airlines crash; global grounding; CEO replaced.
- 2020
MAX returns to service in the US.
- 2024
Alaska Airlines door-panel incident.
what went wrong
- Speed and cost pressure shaped critical design choices.
- Single point of failure in safety-critical software.
- Information withheld from pilots and regulators.
- Engineering culture overshadowed by financial targets.
the lesson
Cutting corners to match a competitor's timeline can create risks far larger than the competitive threat.
Apply it to your business
- 1Never let cost or speed decide safety-critical choices.
- 2Remove single points of failure in critical processes.
- 3Engineering and quality voices must be heard at the top.
Laws at work in this story
Figures are rounded and drawn from public reports, company filings and widely cited coverage at the time. Check the company's latest filings before relying on any number.