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Old 1st Apr 2018, 22:41
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JKerman
 
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Cabin noise levels in old airliners

I was wondering if anyone knows what the noise levels in old airplane cabins (e.g. Tri-motor, Boeing 247, Constellation, De Havilland Comet, Boeing, 707) were, in decibels. I've searched the internet and can't find any information on this.
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