FAA paper Noise Attenuation Properties of Noise-Canceling Headsets
Jim Macklin wrote:
InFO
SUBJECT: Noise Attenuation Properties of Noise-Canceling
Headsets
They are absolutely correct. It's about time someone exposed the myth!
Please send all working ANR headsets, along with a modest $10/set
disposal fee, to me for recycling.
Inoperative sets can be disposed of locally, as they pose no danger.
That is all, please comply...
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