In article , "Morgans"
wrote:

There is zero evidence that ANR does anything to prevent hearing loss
over and above a good passive headset. If you can't cite clinical data
to substantiate such an important claim, it it quite irresponsible to
make such a claim.

Simply because ANR has not been around long enough for any long term studies
to have taken place.

If the total decibel reduction ratings are higher for an ANR unit versus a
passive unit, would that not be a pretty darn good reason to believe that
they will result in less hearing loss?

But if a passive unit lowers the decibels sufficiently, then the pilot won't
suffer hearing loss. In that case, the better performance of the ANR won't
help. (don't get me wrong - you can have my ANR headset when you
pry it from my cold dead fingers).

--
Bob Noel
Looking for a sig the
lawyers will hate