WASHINGTON (Reuters) - The National Transportation Safety Board said a number of Boeing and Spirit AeroSystems executives will testify at a two-day hearing starting Tuesday on the January Alaska Airlines Boeing 737 MAX 9 in-flight door plug emergency.

Boeing's senior vice president for quality Elizabeth Lund and Doug Ackerman, vice president of supplier quality for Boeing are among those that will testify as will Terry George, senior vice president and general manager for Boeing Program at Spirit AeroSystems, the NTSB said. Several Federal Aviation Administration officials will also testify.