> A reminder that aviation regulations are written in blood.
It's enormously expensive for an airframe manufacturer to deal with the fallout of a crash.
There aren't any engineers in an airframe manufacturer willing to sign off on a faulty design. Some good engineers are so worried about that they get shifted to working on conceptual projects.
I took a loooong time for Boeing to convince the FAA that a twin engine jet was safer than a 4 engine for ocean crossings.