| 11. | Because there is no evidence of mechanical failure, an FBI official replied.
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| 12. | The first developed some type of mechanical failure about two hours later.
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| 13. | Bryant would not say if there had been signs of mechanical failure.
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| 14. | Furman said he thinks a mechanical failure may have been the cause.
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| 15. | He would not say if there had been signs of mechanical failure.
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| 16. | All along, Eitan Sobel had held out hope for a mechanical failure.
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| 17. | His plunge in the points standings is largely attributed to mechanical failures.
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| 18. | Defense Secretary Donald Rumsfeld said the cause appeared to be mechanical failure.
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| 19. | It was evident that only a mechanical failure would stop Hakkinen.
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| 20. | Iranian television said a helicopter crashed Wednesday because of mechanical failure.
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