I've just been visiting Yahoo! Aviation clubs and see that an Egyptair 767 is down near Massachussetts. The aircraft was en route from JFK to Cairo. CNN reports the basic facts. The search is going on and the story is still unfolding.
Egyptair has two 767s remaining, both -300s (the others have left the fleet, two with SAA I think). Looking at the JP, they were the 275th (SU-GAO) and 282nd (SU-GAP) off the line in August and Sep '89.
The 767 was operating flight MS 990, scheduled to leave JFK at 2300. CNN reports that contact was lost 60 miles s. of Nantucket (about 200 miles e. of JFK). at 2.15 am, which suggest that the aircraft was quite seriously delayed.