20 karma · joined February 21, 2018
“One of the people familiar with MCAS’s evolution said the _system designers_ didn’t see any need to add an additional sensor or redundancy because the hazard assessment had determined that an MCAS failure in normal flight would only qualify in the “major” category for which the single sensor is the norm.
It sounds like we need to find out who that person was and arrest them.
https://www.enr.com/articles/38400-why-engineers-must-rememb...
“Many false theories persist about the cause of this fatal collapse. The failure was not due to poor workmanship, shoddy materials, a rushed schedule, swaying from dancing, “harmonic vibrations” from the music, poor contractor communication or design changes that did not receive proper review.
As documented in the official investigation report, two professional engineers issued sealed design drawings without performing critical calculations to determine whether sufficient load capacity existed.”
1. Drive MCAS with only one AOA sensor.
2. Don't tell MCAS to look for (or even think about) bad AOA data or AOA disagreements.
3. Don't actually bother to tell pilots that they don't have AOA disagree warning lights.
4. Don't bother to tell pilots that MCAS exists at all.
5. Don't test MCAS subsystem to see what it actually does with bad AOA data.
6. Give MCAS a ridiculous amount of control authority, operating cumulatively over repeated applications to exceed what the pilot can manually override.
7. Change how the trim stab switch has been wired since 1966 and not tell pilots.
It’s not the accounts or union stewards that should be facing criminal charges, it’s the engineers. At a minimum, any PEs should be yanked.
1. Drive MCAS with only one AOA sensor.
2. Don't tell MCAS to look for (or even think about) bad AOA data or AOA disagreements.
3. Equip airplane with two AOA sensors as usual, but make the AOA disagree warning light a "value added option" that customers have to pay extra for.
4. Don't actually bother to tell pilots that they don't have AOA disagree warning lights.
5. Don't bother to tell pilots that MCAS exists at all.
6. Don't test MCAS subsystem to see what it actually does with bad AOA data.
7. Give MCAS a ridiculous amount of control authority, operating cumulatively over repeated applications to exceed what the pilot can manually override.
8. Change how the trib stab switch has been wired since 1966 and not tell pilots.
How any engineering team let this through is unfathomable. Don't blame the MBAs or the unions. Didn't these guys get the lecture about the Hyatt?
I know there is a tendency to be consumed with your own importance combined with political heat, but the best course is to develop great filtering tools for users and “Let the people decide.”
Your premise is wrong.
As the U.S. Supreme Court recently stated, "modern corporate law does not require for-profit corporations to pursue profit at the expense of everything else, and many do not do so." ( BURWELL v. HOBBY LOBBY STORES, INC. )
That is SF. Drug deals are done in broad daylight.
We’ve abandoned something that’s been at the core of nurturing the young for 60,000,000 years. I would assume there’s been a fair amount of natural selection at work in a fundamental aspect of the parent-child relationship. I think choosing not to teach that “when I say stop, stop” without thinking that it will not work out for a meaningful fraction of the population, seems a bit like trying to figure out what the Boeing MCAS engineers were thinking.
Shame on D+ for not screening passwords against known hacked u/p.
Malicious prosecution or 1983 action?
For example, how many opinions have you read from Ginsburg where she says “I personally disagree with this outcome, but the law is clear.”? Quite rarely.
Both my Crim Pro and Con Law professors skipped border search cases and summed them up with "you have no rights at the border." That's been the common law since King Tut.
No, I wouldn’t be concerned in the slightest - I’d just get a card from somewhere else.
Maybe if they earned it instead of demanding it they’d be taken seriously?