In article ,
real_name wrote:
ANR doesn't affect your ability to hear the engine, but the claims that
ANR protects your hearing better than passive attenuation have no proven
scientific support. ANR is little more than a comfort/convenience item,
and certainly not a safety item.

When ANR allows me to hear the radio better, it most certainly
contributes to safety. It's not flight-critical, but still...

I don't know, I've flown quite a few different aircraft--include
twins--and never had a problem hearing the radio using my passive DC
10-20 headset. I also don't consider the radio to be a safety item.


JKG