How Recovering the AirAsia Black Boxes Can Reveal More About the Crash

Divers have retrieved one and also located the other.

"This is a very complex accident and we're not going to get instant answers that are going to take full scope of it, put it out on the table, for some time,” John Nance, a retired commercial pilot and ABC News aviation consultant, said. “But we may get a quick indication here of at least what it isn't.”

Divers today retrieved the box containing the flight's data recorder. Officials have located the second box, or cockpit voice recorder, but have not yet removed it from the ocean floor, according to The Associated Press.

The boxes may have been ejected from the plane during the Dec. 28 crash, Indonesian military commander Gen. Moeldoko told the AP, but Nance said he believes both recorders could still be in good condition.

"They're really computer chips embedded in a lot of foam in a package that is almost indestructible," Nance said. "You can submerge them, keep them underwater for years. You can slam them into the ground. You can burn them for hours, and you're still not going to obliterate the information."

The already-recovered flight data box can help provide some insight on its own, he added.