Harrowing video showed the doomed Big Apple sightseeing helicopter fall out of the sky into the Hudson River Thursday as witnesses described the aircraft breaking apart midair.
The tourist helicopter rapidly dropped into the chilly waters, causing a major splash around 3:20 p.m., video captured by a bystander and obtained by The Post shows.
The tail and rotors of the New York Helicopter appeared to break off before it plunged into the Hudson, killing everyone onboard, according to the footage and multiple witness accounts…