If similar problems have been previously identified and solved, assess those solutions. As part of every investigation, identify similarly engineered parts or plant processes that may have experienced this problem. Again, these could be a source of alternative solutions.
Avoid �band-aid� fixes - this will help prevent future recurrence of the problem. Sometimes due to cost and/or product life a compromise is to implement interim actions permanently. However, this is considered the least acceptable solution.
As part of investigating problem solutions, the team should look at new and current technology around an engineered part and/or the manufacturing process. New alternatives could come from advances in these areas. In some cases a thorough understanding of the current design and/or manufacturing processes produce efficient solutions. The team should remember that the solution needs to be incorporated in future products.