John,
I'll look at it, but no promises. The cargo system is set up loosely on the FedEx/UPS model, and they don't do a lot of "non-hub" flying (the main hub in our case being Denver). I'm also not sure how much real world domestic cargo flying there is out of JFK when you remove UPS and FedEx from the equation. I've been pondering some cargo flights between that would connect our passenger hubs to each other (and have actually created a few to see how it works out).......
So a question for you. Does it have to be JFK, or would EWR be ok? Just for planning purposes on my end.......
btw JFK (& BOS) gained a daily 747-400F to Rio last week I think.........

EHAM-YSSY B772LR
ATP, CFI, CFII & MEI, CL30, 727, 737-200, DC-9
FS9, Active Sky 6.5 w/ASG, FSPax