Nepal tragedy: data reveals what caused the deadly Yeti Airlines plane crash

The investigation committee found that the flight data recorder and cockpit voice recorder from the crashed Yeti Airlines ATR-72 aircraft, which killed all the 72 passengers on board on January 15 in Nepal, indicated that there was a problem in the engine.

"In ATR-72 aircraft feather means to stay inclined to 90 degrees in spite of being in a certain degree as turned by the pilots. In order to increase the speed, the pilot has to
incline the propeller blade using the liver that is in the cockpit. With the propeller blade standing at 90 degrees, the plane would lose aerodynamic movement," the committee said in a report.

The twin-engine ATR 72-500 aircraft plummeted into a gorge as it was approaching Pokhara International Airport in the Himalayan foothills. The crash site is about 1.6 km from the runway at an elevation of about 820 meters (2,700 feet).

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