Production / Maintenance:

• Production:   Once a production readiness review has been completed, the product can enter production. At this stage all the production and production test equipment and processes should have been trialled – during the development phase.

• On-going maintenance:   Even when a product has entered production on-going design maintenance will be needed. Component obsolescence, design problems previously not noticed, minor enhancements and other issues will all need addressing. These activities must all be allowed for during the process.