I was working late one afternoon when I got a call from a nun at Cora Maria, a Catholic Retreat house located on the waterfront on Bay Street and used by the nuns, some of whom work at the Stella Maris School among other duties.
Anyway, they were all excited and explained to me that they had just witnessed a plane crash into the bay in front of their building. They were close enough to see that it was a white plane and they could actually see the prop throwing up spray as it cut into the water and disappeared below the surface. One nun was watching with binoculars. So, of course I sent out search and rescue and a extensive search was conducted of the area. Nothing was ever found, not even an oil slick,nor was a plane ever reported missing. Normally I would white this off as a flock of seagulls or something else. However speaking personally to the nuns, most of whom, while not trained observers, are college educated people of high respect. They were certain of what they saw.
After doing some research, I found this occurrence actually happens once in a while, in which a plane is seen by many witnesses on shore crashing into the water and no trace is ever found and no planes are reported missing. I know a couple of guys who were working in a power plant one night, trying to get a generator up to it's proper 60 hz frequency, when a image of a sitting woman holding a baby appeared briefly over the generator. Weird shit to say the least.
So, my own opinion of what happened in this plane crash, is there was some sort of rare "time slip" that appears to affect planes in particular for some reason. Then observers on the ground, the nuns in this case are actually observing something that happened in the past, or will happen in the future. Just my opinion. I know nothing about the paranormal. Then of course, that white plane could still be sitting at the bottom of Sag Harbor bay, a artificial reef, now enjoyed by the local fish population!

Cora Maria on Bay Street where incident happened.