It would help if you would post the make and model of intercom.

Jim



wrote in message ...
We just joined a flying club with a 1976 Piper Warrior. The airplane has
a
two-place intercom. I own four headsets and plan to occasionally take
friends up in the back seats. Is there such a thing as an adapter I could
plug into one of the existing headset jacks that I could then plug three
headsets into?
Scott Wilson