[walrus01]

> OTOH, part of the reason the duopoly persists is because of heavy regulation

Also because Boeing was ultimately more successful than the third competitor in the market. Boeing sold many aircraft during a period in time when the DC-10's reliability was deeply questionable in its early years, due to some aircraft design/engineering related fatalities that killed hundreds of people. There have been a shitload of fatal Boeing accidents including things like the 747-vs-747 crash in the canary islands, a Japanese airline 747 that flew into a mountain, etc, but those were all caused by human factors.

There have been very few large fatality crashes that can be directly traced back to an inherent design flaw in a Boeing plane.

[dingaling]

Just a couple from memory:

There were several fatal 737 accidents due to uncommanded rudder actuation.

The earlier 707 also had several cashes linked to rudder design and the UK CAA required design changes before it was permitted on the UK register.