Kearny's Fly Liberty Charter chopper went down south of East 86th Street near Gracie Mansion around 7:15 p.m., New York City Police Commissioner James P. O'Neill said.
The pilot was able to free himself and was taken to a hospital in stable condition, O'Neill said.
Police and fire divers removed the other four passengers, two of which were hospitalized in critical condition, police said.
Fly Liberty Charter wasn't immediately available for comment when Daily Voice called at 10 p.m.
The helicopter was a private charter rented for a photoshoot, according to police.
The National Transportation Safety Board will be conducting an investigation, O'Neill said.
Click here to follow Daily Voice Garfield-Lodi and receive free news updates.