My husband worked at Boeing as an engineer for more than 30 years--now retired--and he's not at all surprised by what is unfolding. Among other issues, the continual re-working of the 737's design over the years has resulted in changes and modifications being made by recently graduated design engineers unable to read the legacy code of the original designs. As senior engineers have been pushed into retirement, no one who knows legacy code languages remain. At least the 787's were designed from the ground up! (Though the outsourcing of many aspects of the plane's design and manufacture created its own challenges with inconsistencies as the aircraft were assembled.) Still, I happily fly on the 787 myself.
In another interesting twist, I was contacted by a media outlet concerning the fact that the Boeing CEO asked for and got the Board to pay for personal legal counsel for him. Clearly the only reasons why a CEO would need to worry about personal liability is if there was a risk of liability for fraud or if there is a potential for personal criminal liability. As a shareholder of Boeing (well, via community property!) I wonder why corporate funds are being used in that way...