> That created the dangerous situation where they couldn't turn off the engine after landing.
replyWhich is vastly preferable compared to all of the dangerous situations just prior to that landing.
The vastly preferable situation was to have redundant wiring that properly complied with regulations, which was retrofitted in an airworthiness directive (safety recall) after the accident.
replyThey also required engine software that detected the sudden increase in speed associated with a shaft break and automatically cut fuel.