Chris Crosby writes a post on Boeing's three bid process which meets SOX compliance contributed to the 787 problems.
The Folly of the Three-Bid Model: A Thesis on How SOX Grounded a Dream
In Chris's post he makes the point that a three bid process will show you meet SOX compliance, but this flies in the face of what Quality expert Deming recommends.
Some things done the old way worked. Here is post by an ex-Boeing Director of Quality Assurance.
Bob Bogash, retired after more than 30 years with the Boeing Commercial Airplane Group, spent the last 9 years of his career as the Director of Quality Assurance for the Materiel Division. In this position, Bob was responsible for the on-time production and quality of all the non-Boeing produced hardware and software used on Boeing commercial jetliners. More than 3000 outside suppliers in more than 20 countries delivered more than one billion parts a year to Boeing production lines. Bob organized this function from a zero baseline, ultimately staffing more than 35 worldwide offices with over 330 highly skilled professionals.