Earlier quoted context omitted.
Boeing doesn’t make engines, GE does
Engine Alliance (GE and Pratt & Witney) and Rolls Royce are the 2 players. Because engines are purchased separately from the aircraft, the buyers and engine manufacturers must be in a bind, since the buyer needs to pay for the engines for Boeing to fit them, whether the plane enters service or not.
FAA Finds New Risk on 737 Max, Orders Boeing to Make Changes
31–40 of 354 posts
Re: FAA Finds New Risk on 737 Max, Orders Boeing to Make Changes
#32Earlier quoted context omitted.
On the flip side, all airplanes have flaws to some degree or else they would never crash. A deep audit of everything in the end should make things safer. And Boeing also has a solid safety record on their other models 777 and 767
Boeing also has a solid safety record on their other models 777 and 767 and an incredibly poor safety record for their 737-MAX model. The problem for Boeing is the history of flying has many examples of planes with poor safety records being rejected by the flying public. Only time will tell if the 737-MAX joins that illustrious group, but the more the plane stays in the news for all the wrong reasons, the better are…
Re: FAA Finds New Risk on 737 Max, Orders Boeing to Make Changes
#33Earlier quoted context omitted.
On the flip side, all airplanes have flaws to some degree or else they would never crash. A deep audit of everything in the end should make things safer. And Boeing also has a solid safety record on their other models 777 and 767
Aircraft don't have to have flaws to crash, unless you count the human pilots, air traffic controllers, maintenance crews etc. as flaws. You could have a perfect aircraft with no flaws, and a human could still manage to crash it. See the Germanwings flight for a good example.
Re: FAA Finds New Risk on 737 Max, Orders Boeing to Make Changes
#34Not going to trust that model, like dc10 (?). May work not engineer. But as customer, only get 1 life. Not as software beta tester.
Re: FAA Finds New Risk on 737 Max, Orders Boeing to Make Changes
#35Re: FAA Finds New Risk on 737 Max, Orders Boeing to Make Changes
#36Re: FAA Finds New Risk on 737 Max, Orders Boeing to Make Changes
#37Not going to trust that model, like dc10 (?). May work not engineer. But as customer, only get 1 life. Not as software beta tester.
How can you practically avoid a model of plane, other than avoiding all airlines that operate them?
In addition I'm sure airlines not flying the MAX will be using that fact as a marketing tool (i.e. we only fly Airbus etc) so you could limit your bookings with just those airlines.
As an example of this, here in Australia I know one of the carriers is planning to fly the Max some time next year.
If they go ahead with that plan, I will be making sure not to book with that carrier at least for the next few years.
Re: FAA Finds New Risk on 737 Max, Orders Boeing to Make Changes
#38Earlier quoted context omitted.
The industry is pretty homogeneous and somewhat of a revolving door between the few OEMs. What are the odds that the code on this plane is orders of magnitude worse (in terms of code quality) than every other similar bit of code in the sky? Edit. I should have to say this but I'm not defending Boeing here. I'm saying it's not at al unforeseeable that the other planes, even ones by other manufacturers are just as bad.…
Upgrades to the 737 do have a particularly constrained design space, though (due to the oft-mentioned very low ground clearance).
Re: FAA Finds New Risk on 737 Max, Orders Boeing to Make Changes
#39This plane appears to be a (sorta) flying dumpster fire rushed to market against Airbus with tragic consequences. One design flaw after another is MAX failure.
The industry is pretty homogeneous and somewhat of a revolving door between the few OEMs. What are the odds that the code on this plane is orders of magnitude worse (in terms of code quality) than every other similar bit of code in the sky? Edit. I should have to say this but I'm not defending Boeing here. I'm saying it's not at al unforeseeable that the other planes, even ones by other manufacturers are just as bad.…
Unfortunately, that comparison algorithm had a flaw - it got confused when it received spikes of invalid data with a certain timing pattern and erroniously used the invalid data. That pattern shouldn't have been possible. No-one has been able to figure out any possible cause for it even in retrospect, and they certainly didn't anticipate it. However, the engineers designing the system did realise that the flight computers could have subtle bugs triggered by specific data timing - so not only did every flight computer have a monitoring channel running independently-written code checking its calculations, that monitoring channel was intentionally not synchronized with the main channel or any other flight computers. This meant every time one of the flight computers acted on bogus data and forcibly pitched down, the monitoring channel calculated values so different that the fault detection disabled its ability to do so within a few seconds.
The maximum allowed authority and the altitude at which the system was enabled were also much more carefully restricted than MCAS, so it couldn't take such erroneous actions in situtations where the pilot might be unable to recover. Combine the two safeguards, and something like Qantas Flight 72 with a few passenger injuries but no crash was pretty close to the worst-case scenario that could be caused by this weird and incredibly unlucky issue.
Re: FAA Finds New Risk on 737 Max, Orders Boeing to Make Changes
#40Earlier quoted context omitted.
Upgrades to the 737 do have a particularly constrained design space, though (due to the oft-mentioned very low ground clearance).
Why can’t they change the ground clearance and remove the constraint?