Indicates their tireless commitment to air safety!
groan
You okay?
This was a 777; those planes aren't in production any more, so this plane is probably at least 10 years old I'm guessing. This isn't a factory or design issue, this is a maintenance issue, and that falls on the airline, United.
This could be a maintenance issue.
Not a counter, but who is responsible for maintenance?
I ask assuming Boeing issues are the new "derailments".
In this case United Airlines is.
https://www.unitedtechops.com is who does the work, but United is responsible for it as the operator of the aircraft.