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#13
January 9th 07, 06:50 PM
posted to rec.aviation.piloting
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FAA paper Noise Attenuation Properties of Noise-Canceling Headsets
Ron Natalie wrote:
Even engine noises are frequently enhanced by ANR. I kept hearing a clanking noise in the ANR. I pulled off my headphones for a "better listen" and couldn't hear it. With the ANR I heard it. On landing I found my exhaust pipe had busted a weld and was flapping around. I was able to hear a starter that was stuck engaged WITH the ANR set on. The sound was not audible by my companion pilot with a non-ANR set, or me with the headset removed. 
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