Date: 11 Mar 99 03:54:08 From: JF Mezei <email@example.com> References: 1 Followups: 1 2
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Puranjai Dass wrote: > The cabin altitude > warning (an intermittent horn) sounded at 10,000 cabin altitude and this > was silenced by the F/O operating the horn cutout. He then armed the > passenger oxygen switch. The aircraft cabin altitude continued to climb. > Approaching a cabin altitude of 14,000 ft the Captain ordered manual > deployment of the passenger oxygen masks. Is it an urban myth that oxygen masks automatically deploy ? How come they required manual intervention to be deployed when just about every safety briefing to pax mention "will automatically deploy in the unlikely event of a de-pressurisation" ? ? > Negative altitudes are not a > reality of life, are they? There are a few areas on earth where ground is significantly below sea level (a few hundred feet). There is an area in California USA like that.