Can't find anything on Flightaware - perhaps if you can point to a specific time in the LiveATC.net archives when you hear this, I could take a closer listen.
EDIT: Found it. It's "White Pelican", not "Pelican". "White Pelican" is CargoItalia. I've seen them only once by the Korean Air Cargo area - they must be pretty new to JFK. As for what type of plane, it could either be a 767, MD-11 or 747 - my memory of it isn't very good.
The voice, therefore, is Italian, not Russian. Which makes sense, as it didn't sound very Russian to me.
EDIT #2 (more than ASF on the pull): Apparently, my memory was pretty bad, as CargoItalia flies DC-10s:
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Photo © Marco Toso - SpotIT
[Edited 2007-04-27 08:28:13]
[Edited 2007-04-27 08:31:35]