The Chinook helicopter is able to fly on one engine, albeit with degraded performance capabilities. However, the failure of one of its rotors would most likely prove to be fatal.

The first ingredient, as "Username" suggested – is SiFly's larger-diameter rotors, leading to lower disc loading, slower rotation speed and improved energy efficiency in a hover.

The rotor of the Bell 206 helicopter from last week’s deadly crash into the Hudson River has been retrieved, the National Transportation Safety Board said.

The aircraft was on a sightseeing flight when it suddenly broke apart in midair, its rotor blades falling separately toward the water.

New York Helicopter tours, the company involved in deadly crash on Hudson River is shutting down operations immediately, the FAA says.

The rotor of the helicopter from last week's deadly crash has been retrieved from the Hudson River, four days after the devastating accident that killed all six people on board, according to a ...

New York Helicopter tours, the company involved in deadly crash on Hudson River is shutting down operations immediately, the FAA says.

The main rotor of the doomed helicopter that crashed into the Hudson River was finally recovered Monday -- as investigators continue to probe what caused the deadly tragedy.

The main rotor of the doomed helicopter that crashed into the Hudson River was finally recovered Monday — which could provide crucial information as investigators continue to probe what caused ...

A tourist helicopter crashed into the Hudson River in New York City on Thursday, killing six people. A former military helicopter pilot told BI the helicopter's rotary system appears to have failed.

What is a Jesus nut? The Jesus nut is the main rotor holding nut, or pin, that holds the main rotor to the mast of some helicopters, according to science and tech website Technology.org.