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.
I don't believe they convinced the FAA twin is safer, just that it meets the necessary safety margins. Airlines want them to meet that regulation for fuel efficiency, but I'd want a source that they're actually safe-er, instead of simply safe enough
My source is I was told this by the engineers who where involved.
this plane did not crash, it made an emergency landing 2 miles from the airport in an onion field. Only 10 crew and 1 passenger survived. The other 123 souls aboard died of smoke/CO inhalation from the fire.
the sole surviving passenger, 21-year-old Ricardo Trajano, disobeyed the instructions to remain in his seat.