Everyone who watched the video of the crash of the Boeing jumbo jet is left with a lot of questions.

The Chinese Eastern Airlines flight that appears to have been captured on a security video near the impact site has stumped investigators and experts as they search for what caused its dramatic and fatal descent.

John Cox, an aviation safety specialist and former 737 pilot, said it was an odd profile.

Concerted Effort

Benjamin Berman, a former investigator with the US National Transportation Safety Board (NTSB) who also used to fly 747s, said that previous scenarios aren't good points of comparison because of the similarities between the two types of plane.

Berman said that it would either take a concerted, difficult, and deliberate effort from a pilot to make a jetliner like a 747 dive.

You need something to hold the nose down.

No Survivors

Chinese authorities say they have found one of the two black boxes from the crash, but haven't revealed what it is. The crash is as baffling as it is devastating.

Air traffic controllers tried to get in touch with the pilots of the flight, but they couldn't. The hilly terrain where the plane crashed made for a terrible impact as the plane fell at a rate of 30,000 feet per minute.

One thing that is certain is that the world now has another aerial mystery on its hands.

China Jet's nosedive from 29,000 feet baffled crash specialists.

21 people survived a plane crash in Texas.

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