[InclinedPlane]

This is bonkers. Nobody anywhere in the world should expect that one buys an airplane which is unsafe by design. Also, the idea that there are two versions of a plane, one that kills people and one that doesn't, and if you buy the wrong one that's completely your fault is just insane.

[Cacti]

Frankly, you have no idea what you're talking about. This is how the airline industry works. Airlines WANT cheap planes and they ARE WILLING to and DO skimp on some safety features to save money. Airlines WANT safety features, at least some of them, to be optional so that they aren't forced to spend money on them if they don't want them.

For example, backup fire extinguishers in the cockpit? Optional. Extra oxygen masks? Optional. Advanced radar? Optional. There are hundreds of items like this on every model, whether it's Boeing or Airbus or someone else, because their customers WANT them to be optional.

And by the way, not all airlines do this. American paid for the upgrades. Southwest paid for the upgrades.

So maybe you should ask yourself why it is that Lion Air and Ethiopian Air were willing to spend huge amounts of money on a new jet, then spend some $1-$2 million on optional upgrades, and yet not include the MCAS upgrade in those options (and they were made well aware of it, as you can see from other airliners purchase of these upgrades). Or for that matter maybe you should ask why Lion Air knew that the plane was having trouble with the AoA sensors for several flights prior to the crash, and yet did not perform the required maintenance on them (a serious violation) and did not pass along information to its next crews (also a serious violation), who were caught completely unaware.

Airlines run at 2, 3% margin, and they do so by trimming costs at every possible area. Sometimes those areas are safety related. Airlines are not some doe-eyed naive little up who just trust whatever Big Boeing/Airbus tells them. They know how the planes work, they have their own pilots, they have their own engineering teams, they have their own specialists and experts, and they make decisions to sacrifice safety for savings, and they do it ALL THE TIME.

[InclinedPlane]

There's plenty I could say in answer to this but most of it is unnecessary.

There is no excuse for a company such as Boeing, working under the regulation of the FAA, to produce any version of any model of plane which is fundamentally unsafe to fly. Period. None.

We're done here.