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There record is not dismal with the 737MAX. If you look at where fault lies part lies with boeing and part lies elsewhere in the safety chain. In contrast to m
by privateSFacct 7y ago
There record is not dismal with the 737MAX.
If you look at where fault lies part lies with boeing and part lies elsewhere in the safety chain. In contrast to many other areas - the evidence of ill intent is relatively weak here. Even without prison Boeing is facing major financial impacts as a result of this issue (as it should).
It's looking like evidence from the airlines that proper maintenance was done may have been faked.
https://www.bloomberg.com/news/articles/2019-10-15/pictures-raise-specter-of-fake-evidence-in-737-max-crash-probe https://www.bloomberg.com/news/articles/2019-10-15/pictures-...
We know lots of maintenance issues unaddressed and repeated warnings by the plane itself that there were sensor issues were not properly addressed.
We know response was not ideal on pilot side which overlaps with some training and other items around stab trim cutoff and/or automation dependency.
These factors are partly why there have been no accidents in 737MAX in US despite lots of flying.
Yes - boeing should design a totally safe plane. Part of that is going to be designing plans to accommodate a wider range of pilot skill (what they are calling "future pilot populations") and to better accommodate maintenance and ground handling training assumptions to allow for greater risk of problems there. This is already being implemented.
Ironically, one element may be to REDUCE the reliance on pilots as a key flight safety control and then increase automation and redundancy in the automation.
- thatswrong0 7y ago> the evidence of ill intent is relatively weak here Most people are referring to negligence, not ill intent. "Let's make more money and rush this thing out! (Even though this could kill people)", not "Let's deliberately design a system to kill people". Regardless, one sensor failing should not induce a plane to fly itself into the ground, despite the best efforts of the pilots to recover (and despite the fact they were not necessarily the best trained pilots). 2 / ~400 complete hull losses of brand new jets is completely unacceptable. That is dismal. Don't try to downplay it.
- privateSFacct 7y agoThese were not the "best efforts" to recover - stab trim cutout is a memory item. Absolutely - Boeing is going to be designing much safer planes in future to accommodate different pilot populations. That is clear and necessary. This will make us all safer. Boeing obviously screwed up with a primarily US based mentality. This system was PARTICULARLY fragile in the face of poor maintenance and reliance on automation - which boeing was unreasonably dependent given a US centric view. Look into history of comets and concorde if you want to look at hull loss rates (note - both stopped flying forever when safety issues became clear). I predict almost no chance that the max will be taken out of flying forever.
- bronson 7y agoBy US-based mentality, you mean one where it's OK to design an automation system that takes input from a single sensor? And this is somehow OK for American pilots, but not for foreigners? I think evidence will show you're wrong. The MCAS is a terrible design no matter where you intend to fly it.
- privateSFacct 7y agoYes - automation in the US context has historically evolved with pilots pilots considered a key and reliable redundancy. So yes - the automation is not full automation / full redundancy. The idea has (historically) been then that the pilots bring overall safety to required standard and the pilot is the redundancy. The evidence in the US has showed that this approach works from everything from stab trim cutout issues to dual engine failures. In the US, efforts in last years have focused on the entire chain of safety (actually away from plane design) and the US has hit some of the BEST periods of safety in aviation. This is everything from duty / rest periods, maintenance, minimum training requirements etc. "And this is somehow OK for American pilots, but not for foreigners?" Let's be VERY clear here: The requirement to fly Part 121 in US even as just a first officer requires an ATP and 1,500 hours. Most folks have a a significant amount of other flying prior to that, the US has a much bigger GA aviation scene, private flight instruction, glider, private jet / charter markets and military flying. The US has something like 12,000 pilots flying for the air force alone. The first officer on your long flight is very very likely to have a TON of experience in all sorts of situations, and particularly with manual flying. Overseas - you can be a graduate with an academic / training background only and 250 hrs of "flight time" more broadly defined and be at the controls. Ethiopian airline pilots were 25 and 29 years old. In the US, major carriers even more picky. Southwest for example: Flight Experience: 2,500 hours total or 1,500 hours Turbine total. Additionally, a minimum of 1,000 hours in Turbine aircraft as the Pilot in Command* is preferred. Southwest considers only Pilot time in fixed-wing aircraft. This specifically excludes simulator, WSO, RIO, FE, NAV, EWO, etc. "Other Time" will not be considered. So yes, if boeing is going to sell into markets with folks getting into cockpit as co-pilots with sometimes as low as 50 hrs (1 week) of experience (in cadet / training systems) then 100% they will need to redesign and rethink things for this future pilot population - and yes, that means the systems will have to have MUCH more natural redundancy built in. Ignoring this difference in background, opportunity and skill will lead to lots more deaths - all preventable if the thinking changes and a better understanding of future pilot populations is developed, and that includes accounting for differences in training and experience.
- bronson 7y ago> Their record is not dismal with the 737MAX. By what metric? By every metric I can find (passenger deaths per trip/flight leg/flight mile, hull losses per delivery/year, etc) the MAX is an outlier. In fact, I can't find any other airframe in the last 50 years that even comes close (including the DC-9 and TU-154). What other airplane has killed 300+ passengers in its first 4 years of operation? So, what metric have you selected to show that the MAX isn't dismal? (and please, no lie-with-statistics stuff like hiding the MAX in 737NG data, or claiming that crashes by foreign pilots or on foreign soil don't count)