Thread: Cannula vs Mask (FAR)
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Old October 30th 07, 04:18 PM posted to rec.aviation.piloting
Stefan
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Posts: 578
Default Cannula vs Mask (FAR)
I've heard that above some altitude, the FARs require the use of an
oxygen mask rather than a cannula in US registered aircraft. Where do I
find this requirement? (FAR 91.211 doesn't mention it.)

Thanks
Stefan