I was having fun with this and remembered there was an earlier incident out of JFK on September 15th with American West flight 17 (
source). You can view the same images for JFK airport here
http://www4.passur.com/jfk.html That plane took off at 6:49 PM (18:49) and reported an incident over Colt's Neck, NJ. If you follow flight 17 out of JFK, notice at 18:57:03 and 15,000 feet (just past Colt's Neck, NJ)
something unusual happens there too. Set the map range at 40 miles.