> How do you prevent a single check from slipping through? For a start, by not ramming an essentially new type through all test flying & certfication testing i

> How do you prevent a single check from slipping through? For a start, by not ramming an essentially new type through all test flying & certfication testing in 17 months before declaring it ready for service. There is a reason that the Soviet Ministry of Aviation made newly-approved types fly only cargo and mail for a year or more; not just because their techniques were 'unsophisticated' per the Western view but also because they understood that introducing a complex system into a complex environment of weather and human factors couldn't be fully modelled but had to be subjected to prolonged real-World experience.