In January, a door panel blew off a Boeing 737 MAX plane during an Alaska Airlines flight. Informal communication logs between workers at the Boeing plant where the plane was assembled reveal disarray, repeated production delays and crews who apparently didn’t follow procedures. WSJ's Sharon Terlep reviewed the logs and explains what they reveal. Further Reading: - The Disarray Inside Boeing’s 737 Factory Before the Door Plug Blowout  - Boeing’s Next CEO Will Have ‘Massive Job’ at Company in Crisis  - Justice Department Opens Probe, Interviews Crew in Alaska Airlines Blowout  Further Listening: - A Hole in a Plane and a Headache for Boeing  - The Pressure Inside Boeing  - How the Grounded Boeing Jet Shook the Airline Industry  Learn more about your ad choices. Visit megaphone.fm/adchoices