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B777-200 3 ADM failed

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B777-200 3 ADM failed

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Old 14th Oct 2009, 15:15
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B777-200 3 ADM failed

Took off from NRT climb passed some icing condition. About 3 hours into the flight ADM center failed, after awhile all 3 ADM failed.EICAS showed so many messages. How could 3 ADM failed at almost the same time?? Any ideas??
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Old 14th Oct 2009, 19:16
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Icing of the pitot tubes comes to mind. Just a guess.
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Old 16th Oct 2009, 06:59
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Not only all IAS became unreliable, but also the altimeters. They all displayed difference value! At this time,Boeing still can't figure out the problems yet!
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