3 ms·

At least this sounds like pure human error, failure to follow pre-flight checklists, and not a Boeing engineering/mechanical problem.

• throwawayboise 5y ago
  But engineering/mechanical problems can be identified, analyzed, and eliminated (or mitigated). Human error still finds a way around our many attempts (training, checklists, standardized procedures, etc) to prevent it.
  • inglor_cz 5y ago
    Indeed. You can design some mechanisms as failsafe, but there aren't any failsafe pilots.
  • bmitc 5y ago
    > engineering/mechanical problems These problems are often due to human problems or errors.