Check out:
http://www4.passur.com/lga.html
Set it to 14:30 or so on the 10 mile scale. At about 14:31 you see N929CD east of TEB near where the map says Ridgefield. Over the Hudson the aircraft label switches to just GA and it goes down the Hudson, near the Statue of Liberty and up the East River. At about 14:41 the aircraft passes the 59th Street bridge and makes a left and disappears.