For example here is an article from May of last year [1] about a quality issue with Spirit that had been going on for 4 years. Here [2] is one from last October which says "The goal of the agreement is to stabilize Spirit’s production system, by stemming the flow of quality defects that have afflicted the 737 MAX and the 787 Dreamliner jet programs this year and positioning Spirit to ramp up to Boeing’s planned rate increases." The agreement was Spirit running out of cash and Boeing swooping in to save them despite their poor quality, because they were the only supplier for these fuselages. The financial times wrote a good article about it [3].
This is absolutely a story of outsourcing gone wrong. But they didn't outsource it to China or Mexico, they outsourced it to Kansas, USA.
1: https://theaircurrent.com/industry-strategy/boeing-spirit-re...
2: https://www.seattletimes.com/business/boeing-aerospace/boein...