Officials from Boeing and the Federal Aviation Administration are facing questions about the door plug that blew off a 737 Max jetliner in midflight. On Wednesday, the National Transportation Safety Board began the second day of a two-day hearing on the accident. On day one of the hearing, a Boeing official said the company will redesign the part that blew off an Alaska Airlines jet in January. She says the changes will prevent the same kind of accident. The safety board is also scheduled to question representatives from the Federal Aviation Administration about the FAA's oversight of Boeing, and how that has changed since the accident.
