This entire scenario would pose a huge mess because since the failure is vital to the product’s intended use. I think that the possibility of this failure or a failure occurring and setting back the project should have been accounted for in the project timeline/gantt chart to avoid missing milestones. However since it’s already missed a decision has to be made on whether to extend the deadline, or maybe redistribute time allotted for something else to fix this problem. Though I feel like this probably affects the quality and increases risk of something going wrong. When restructuring the gantt chart, the following should be considered: impact on the budget, resources, different departments involved such as R&D and quality. Will validation protocols need to be updated, the design changed, etc. The project manager should account for other projects that team members have and whether this should be top priority over other tasks. Will this updated timeline occur at the same time people have taken vacation days and will this extend the deadline even more.