Boeing whistleblower claims there is a 'criminal coverup' over the 737 Max blowout

• Boeing has said there's no documents of work done on the door plug that came off an Alaska Airlines 737 Max.
• Ed Pierson, a former Boeing manager, testified that another whistleblower gave him these documents.
• Although the NTSB chair said she believes these are different documents than the ones it's looking for.

A Boeing whistleblower said there is a "criminal coverup" surrounding January's Alaska Airlines blowout.