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Air Force

Air Force Doesn’t Know Root Cause Of F-22 Oxygen System Problem

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The Air Force is “convinced” there is a root cause to a possible oxygen system malfunction that caused the service to ground its F-22 Raptor fleet last summer, but it doesn’t know what it is, according to service officials. “I am convinced there is a root cause,” Air Force Maj. Gen. Charles Lyon, director of operations, headquarters Air Combat Command, joint base Langley-Eustis, Va., told reporters yesterday during a Pentagon briefing. Lyon later said, “We haven’t found a root cause,…

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