Officials are leaning towards the captain:
Flight 370: Officials lean toward 'those in the cockpit' theory - CNN.com
Knowing Malaysian culture, and in comparison to the denial re: Egypt Air, I would say this is significant.
U.S. intelligence officials are leaning toward the theory that "those in the cockpit" -- the pilots of Malaysia Airlines Flight 370 -- were deliberately responsible for the mysterious disappearance of the commercial jetliner, a U.S. official with direct knowledge of the latest thinking told CNN on Saturday.
The revelation followed news that Malaysian authorities searched the home of the lead pilot, a move that came the same day that Prime Minister Najib Razak told reporters the plane veered off course due to apparent deliberate action taken by somebody on board.
The Malaysian government had been looking for a reason to search the home of the pilot and the co-pilot for several days. But it was only in the last 24 to 36 hours when radar and satellite data came to light that authorities believed they had sufficient reason to go through the residences, according to the U.S. official, who spoke on condition of anonymity.
"The Malaysians don't do this lightly," the official said. It's not clear whether the Malaysian government believes one or both the men could have been responsible for whatever happened to the plane when the Boeing 777-200 ER disappeared March 8 en route from Kuala Lumpur to Beijing.