If a world-wide inspection was made on these oxygen systems this weekend we would get a picture of how big the problem is, I would however guess many would not get recorded due to the power of the press etc etc.
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Reminds me of cross-wired checks after the 737 at Kegworth. Think that 737 was ok, but remember lots of faults recorded world-wide. I wonder how many were not recorded.
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Question, do oxygen systems get dual inspections like engines and flying controls ???