People should have paid for the "warning when auto-crash enabled" option and I'm sure Boeing advertised their plane as absolutly unsafe without it...
Someone being pitched 30 different $1 million safety options?
For example, airbags on your car may be mandatory but automatic emergency braking not so much.
Given that thanks to Boeing, the Lion Air crew didn’t even know the MCAS subsystem existed, and that MCAS would continue to rely on the single faulty sensor however many extra redundancies were installed, the decision not to buy seems kind of irrelevant.
This is the part I was trying to clarify. I don't know Boeing's internal processes, but there certainly could be options that are safety-critical but still optional because they are ranked low enough on the severity/probability/detectability scale.
I agree that it's wrong to blame Lion Air as the consumer. The fault seems to be in Boeing misapplying the risk categorization.
In manuals that Boeing gave to Southwest Airlines — the biggest operator of both the MAX and 737s in general — the warning light was depicted as a standard feature just as it is on older 737s, according to Southwest spokeswoman Brandy King.
After the Lion Air crash, Ms King said, Boeing notified Southwest that it had discovered the lights did not work without the optional angle-of-attack indicators, so Southwest began adding the optional feature too.
(quotes from https://www.abc.net.au/news/2019-05-06/boeing-knew-737-probl... )
You're the one who made the factual statement. I'm not the one that's obliged to back that up.
Wikipedia lists the customers, and the number of aircraft delivered to US airlines is a good match for the 20% of aircraft that are said to have that feature. However, that assumption implies that 0% of leasing companies ordered it, that 0% of Canadian customers did, that the American airlines bought all their aircraft and didn't lease any, etc. Might all be true but you can see why I asked for a citation.
https://en.wikipedia.org/wiki/List_of_Boeing_737_MAX_orders_...
Does everyone know this delicious skit? "Clarke and Dawe - The Front Fell Off"