Nowadays a Project Manager is hired as wiz kid who is expert in PRINCE II, DOORS, DODAF etc etc, and all the other buzzwords. Engineers who learned other skills working on projects don't even get considered.
The only problem - they don't know what they're talking about on the programme. So problems don't get an engineer fix when they arise, they get a schedule fix and the hRd problems get slipped toward the end. Then the decision is made to start working concurrently on design, development and production.
If you're a smart PM, at that stage you move onto a new start up programme for "career development" and leave the minor clean up problems to your junior successor.
Guess what happens.......