Plane crashed on Long St., near the intersection of Long St. and Maple St. in the town of Clarence Center, NY. The plane struck only one house, suggesting a fairly vertical descent.
I listened to the ATC recording again, and one pilot reported icing between 6500 and 3500 ft. At 2300 ft aircraft were shedding ice again. One pilot (cactus 14xx if I recall) reported accumulating ice for 10 minutes, and was wanting ATC to get him out of it (this was a couple of minutes after 3407 was reported missing).