Airline pilots who've been following the story also want to know what happened in the cockpit. Did anyone other than the pilot notice that the plane was coming in too low and slow? Did they alert the pilot that he needed to take action? If not, why?
This is all about the culture of the cockpit, pilots say. Airlines the U.S. and around the world have embraced the idea that officers should feel free to challenge authority if they have concerns. Decades ago, the captain's word was unquestionable, making the commander essentially God of the Cockpit. How much -- if any -- of that culture existed in the cockpit of Flight 214?
NTSB Chairwoman Deborah Hersman said it's important for the two pilots in charge of an aircraft during the "very risky" landing phase to work closely together. Investigators have no evidence of cockpit communications problems, she said, but it's something they will be looking at.
Hersman also downplayed the significance of the pilot's experience, saying it's typical for pilots to change aircraft types.
More answers may come from crew accounts. Hersman indicated Monday that her team had not completed interviews with the flight's pilots and were waiting for South Korean investigators and interpreters.
Those pilot interviews will probably form a large part of the evidence investigators use to determine what really happened in those crucial seconds before the tragic crash landing of Flight 214.