For the first time in about 200 hours of use in the same aircraft, my
Bose X ANR headsets started shocking my ears every minute or two. The
aircraft is an '02 Cessna 172 SP with Bendix King avionics.

I suspect it is not the headsets, but perhaps a bad ground somewhere in
the intercom system?

When I swapped to a pair of Lightspeeds, the electric shock stopped.
However, I am skeptical of this test, since the Lightspeed ear cups,
with an inch or so of gel padding, is much deeper than the Bose and the
metal in the cups much farther from my ears.

What would cause this problem?


--
Peter







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