PPRuNe Forums - View Single Post - US Airways ETOPS 757 Smoke in Cockpit/Cabin 1100 Miles Offshore
Old 30th Sep 2010, 21:08
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Bus429

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The "piercing noise" was an alarm.
In that case, maybe it was a toilet smoke detector? Can't think of any other aural warning that would be audible in the cabin?
Anyway, I'm indulging in the speculation I usually decry.
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