For anyone interested in an insider's perspective on recent quality issues at Boeing, check out this short New York Times podcast wherein they interview whistleblowers.

https://www.nytimes.com/2019/04/23/podcasts/the-daily/boeing...

The excerpt that stands out to me the most related the story of one of the whistleblowers finding pieces of debris within a 787 aircraft (between the passenger compartment and the skin), telling his supervisor, and then being told not to worry about it. In another case, a whistleblower in charge of defective inventory found that some of the items marked defective were going missing and ending up installed on aircraft to meet production goals rather than wait for a proper replacement, the red paint marking them defective having been clumsily rubbed off.