by frisco on 10/14/21, 10:24 PM with 344 comments
by pdonis on 10/15/21, 2:15 AM
by civilized on 10/15/21, 12:34 AM
As a longtime corporate grunt, I can guess exactly how management leaned on him. He should have left and let the scumbags find another patsy to do their dirty work.
by dhx on 10/15/21, 4:25 AM
Per [2], MCAS was poorly designed and exhibited a failure mode (e.g. AOA sensor failure) that required immediate pilot action to avert disaster. For pilots that were aware of the MCAS failure mode and how to respond, simulation showed they could respond and avert disaster within typically 4 seconds. A delay of 10 seconds from a pilot to respond correctly to the failure event would be catastrophic.
A Boeing staffer wrote to the Chief Technical Pilot now indicted[^][1] regarding the pilot action required in those critical few seconds:
"I fear that skill is not very intuitive any more with the younger pilots and those who have become too reliant on automation"
The Chief Technical Pilot now indicted[^] responds: "This is the path with least risk to Level B. We need to sell this as very intuitive basic pilot skill".
Boeing it appears then opted for updating Non-Normal Checklists (NNCs) for pilots instead of:* Fixing the MCAS flaw to remove the failure mode altogether
* Ensuring pilots were trained to handle an MCAS failure in a simulator
* Otherwise ensuring that pilots were aware of the non-intuitive nature of MCAS and the particular failure mode requiring immediate <10sec response from pilots
If the failure mode with MCAS did occur, pilots didn't even have 10 seconds to find the NNC and go through the checklist steps before catastrophe was set to occur. They were not aware of MCAS being present on the aircraft and per the Boeing staffer raising the concern, "that skill is not very intuitive" in relation to acting on the failure mode should it have occurred.
[1] https://transportation.house.gov/imo/media/doc/Compressed%20...
[2] https://www.incose.org/docs/default-source/enchantment/21031...
[^] Assumed from job titles in the e-mails, as names are redacted.
by dgdosen on 10/15/21, 12:06 AM
There's no way the buck stops there.
by Someone1234 on 10/15/21, 12:23 AM
Oct 2018: https://news.ycombinator.com/item?id=18324997
March 2019: https://news.ycombinator.com/item?id=19351835
May be interesting to read with the benefit of hindsight and everything we've learned about the process that lead to those crashes.
by dsq on 10/15/21, 6:34 AM
So remember, when push comes to shove, the technical lead always gets thrown to the wolves while management goes "we don't know about that technical stuff".
Not to detract in any way from what he is culpable for.
by broknbottle on 10/15/21, 1:24 AM
by AllThatJazz on 10/15/21, 12:47 PM
The lead prosecutor, Erin Nealy Cox, then took a job with the firm that leads Boeing's criminal defense.
by defaultprimate on 10/15/21, 3:25 AM
He was still incredibly stupid and made horrible choices, but the environment he was in only facilitates and encourages behavior like this.
by bmitc on 10/15/21, 3:30 AM
by ameminator on 10/15/21, 3:00 AM
by PedroBatista on 10/15/21, 2:36 AM
There are entire generations of people inside that company that should at least sit their asses in court.
by elisbce on 10/15/21, 2:19 AM
by ProAm on 10/15/21, 12:30 AM
by markus_zhang on 10/14/21, 11:53 PM
by m0zg on 10/15/21, 1:39 AM
by slownews45 on 10/15/21, 12:16 AM
Poor maintenance. Pilot skills in hand flying and unusual flying and recovery so different (overseas they don't always come through a normal US style GA background).
If they would have looked more closely at the US, they would have found that this system was triggered (and resolved) I suspect pretty frequently by US pilots - ie, the pilots in the loop compensated for the design weaknesses which was the boeing thinking historically. US pilots have played that role on many planes, usually mfg then fixes the issues as well.
If they are going to continue to sell internationally in the markets they want to they actually need to think about doing more automation and flight protection stuff - more computers - not less.
This may never have been the major issue it became if they had focused on a major carrier like Southwest (very experienced crews).
The whole MCAS thing was garbage, interesting they are pinning it on this guy. He does say internally he lied to FAA (unknowingly) as they weren't fully familiar with MCAS modes and edge
Edit: Appears I was wrong - good maintenance in US seems to have been key saving thing.
"Following the recent events in Indonesia and Ethiopia, U.S. flight data was analyzed to understand whether indicators may have existed that could have been addressed, and potentially preempted the accidents. The data showed zero incidents of runaway trim on Boeing 737 MAX 8 aircraft in the U.S. system,” says the report from the special committee.
Good job A&P folks!
by tibbydudeza on 10/15/21, 6:31 AM
Never happened before as the FAA used to be the gold standard for safety - looks they have been gutted by the govt.
by mberning on 10/15/21, 3:08 AM
by supportlocal4h on 10/15/21, 10:05 AM
by anonygler on 10/15/21, 5:04 AM
by matchedLoad on 10/15/21, 12:35 AM
by agent327 on 10/15/21, 9:49 AM
by diebeforei485 on 10/15/21, 5:31 PM
I feel like they should be going after Boeing Co and not after individuals, except individuals at the top of the scheme.
by willcipriano on 10/15/21, 11:28 AM
by fransje on 10/15/21, 3:00 PM
by therealbilly on 10/16/21, 1:09 AM
by Goety on 10/15/21, 7:32 AM