Federal officials released images of a doomed New York City sightseeing helicopter as it broke apart in midair last month, killing six people.

Pilot error was the root cause of the helicopter crash that killed five Marines during a severe storm near Pine Valley in February 2024, the Marines Corps said in an accident report released on Wednesday.

The series of still photographs taken from surveillance camera video shows the fuselage, containing the engine and rotors, separating from the helicopter’s tail. The rotor blades and the transmission then detach from the cabin that’s carrying the passengers and the pilot.