The preliminary report was released by the Aviation and Railway Accident Investigation Board on Monday in South Korea.

A small American Airlines jet collided with a Sikorsky H-60 military helicopter on approach to Reagan Washington National Airport and crashed in to the Potomac River on Wednesday night.

South Korean officials are launching an investigation into the cause of the fire that engulfed an Air Busan passenger plane, with eyewitness accounts suggesting a power bank may have sparked the blaze.

Pilots’ actions after the bird strike are an early focus of the investigation, according to people familiar with the probe.

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Bereaved family members of the Jeju Air plane crash honor the victims through a joint ancestral rite -- also known as charye -- at the memorial altar set up for the plane crash victims at Muan International Airport on Wednesday,

South Korean officials investigating the fatal Jeju Air crash have published a preliminary report of the accident.

Both engines of the Jeju Air plane that crashed last month contained duck remains, according to a preliminary report.

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The feathers and blood stains on both engines of the Jeju Air plane were from the Baikal teal, a type of migratory duck that flies in large flocks, according to a preliminary investigation report published on Monday.

South Korea's authorities investigating last month's Jeju Air plane crash have submitted a preliminary accident report to the U.N. aviation agency and to the authorities of the United States, France and Thailand,