Drum

You're being a pedantic. You knew what I meant re: intercom from the outset.

FAR 60 is very specific. Yeah sure, turn down the noise, all instructors do. Still, the box must be certified at that actual dB level, Can't fight the FAA. dude.

To the other tool OP about intercom use. Sure, come on over to the ER. Convince the CLCP and the Fleet manager to use it on headsets. See how well it works. Like it has NEVER been tried. Jesus, get over yourself.