Somewhere near the Georgia border, his cell phone rang. An online acquaintance, Erik Hersman, was calling.

不过在他的车驶到佐治亚州地界的公路某处时，他的手机响了起来-这是一个他网上认识的叫埃里克·赫斯曼的熟人打来的。

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"This accident hits especially close to home, with the involvement of an NTSB employee, " Hersman said.

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"Charred battery components indicated that the temperature inside the battery case exceeded 500 degrees, " Hersman said.

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The plane experienced g-forces exceeding the 9-g limit of the plane's accelerator, Hersman said.

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