Mechanic: Crashed Helicopter Prone to Breakdowns

The type of U.S. Navy helicopter that crashed Wednesday near Norfolk, Va., killing at least two personnel, breaks down frequently and may be more accident-prone than other kinds of military helicopters, according to interviews and safety data. An MH-53E Sea Dragon crashed Wednesday in the Atlantic Ocean, about 20 miles off the coast of Virginia Beach, during a training mission. Four of the five crew members were pulled from the frigid water. Two later died and a pilot remains missing.

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