headset for the DC-10?

[OMNIDC10FO]

I have a feeling that the 80 year old man wearing the blue leisure suit with matching white belt and shoes would not be too happy when he does not see the FAA-TSO number on your headset. Be careful! or have a legal backup set with you. Just my opinion!

 

[filejw]

Just use the headset in the A/C till top of climb then the speaker .You will be fine,don't spend your own cash.If some Jap ATC is hard to hear just put the A/c headset on for a while.This from an old timer.