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Hi @WKTaylor, Thank you for your very interesting answer, in fact when I say 115dB it is to take the worst case, in reality the ambient sound level of an helicopter is between 85dB and 100dB- 115dB worst case. Many pilots have actually ANR headset. Noise attenuating headset have 15dB to 28dB of...

Hello @rb1957 I'm not saying that the alarm cannot be inhibited but only that volume of this alarm cannot be turned down.[bigsmile]

Hello !! I am currently facing a small problem. I am installing an avionic equipment in an helicopter. And I wonder if it is possible with a simple analysis to determine if the alarm produced by my equipment will be correctly audible by my pilot. Knowing that my equipment will be installed on an...