Two midair collisions have occurred over the Hudson River involving aircraft that departed from Teterboro , one in 1976 , and one in 2009 . As a result of the later accident the FAA came up with new guidelines for pilots flying the Hudson River , including mandatory reporting points and separating slower helicopter traffic from faster fixed-wing traffic via assigned altitude blocks
one in 2009
2009 Hudson River mid-air collision
Teterboro Airport