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One hundred and twenty three of the 307 people on board the Asiana Airlines flight walked away uninjured.

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Aviation experts say that ahas a lot to do with improved airplane design, including stronger seats.

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Pamela Brown has more.

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Oh, it's an accident.

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After seeing this shocking video of Asiana flight 214 crash landing,

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it's remarkable how many passengers exited the aircraft unharmed.

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Oh, my god.

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But did the location of passenger seats on board the airplane leave some safer than others?

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In an analysis done on 20 crashes between 1971 and 2007,

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data showed those sitting closest to the cockpit are the least safe with a survival rate of 49 percent;

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56 percent in the middle section of the plane survive; and the rear cabin had a 69 percent survival rate.

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In this case, the plane landed short of the runway, ripping off the tail.

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Authorities say the two Chinese teens killed in the crash were sitting in the back half of the plane.

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I would love to say that you could sit in the tail of the aircraft and you might be safer,

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but we've seen now in this particular event the tail struck on the arrival.

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We've seen the first class section of aircraft get hit. We've seen fire erupt in the middle part of the cabin.

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Really, there's no specific safest place to sit in the aircraft.

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Your best bet, according to aviation experts, sit as close to the exit row as possible.

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Last year, the Discovery Channel crashed a jetliner in a remote area on purpose,

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rigging it with cameras so that scientists could learn how to improve flight safety even further.

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One big improvement over the last decade -- stronger seats.

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The seats have gone from a 9G to a 16G rating, which means 16 times the strength of gravity.

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When the seats don't move around inside the aircraft when it comes upon an impact, the survivability is much greater.