By Jack Kim SEOUL (Reuters) -Both engines of the Jeju Air plane that crashed last month contained duck remains, according to a preliminary report on Monday, with authorities still trying to determine what caused the deadliest air disaster on South Korean soil.

Investigators found bird blood and feathers in both engines of the Jeju Air Boeing 737 that crashed in Seoul, killing 179 people.

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

Investigators confirmed several details in the preliminary report on the Jeju Air crash in South Korea that killed 179 people. The investigation, and controversy surrounding the crash, continue.

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

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

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

On January 23, 2025, Park Sang-woo, the Minister of South Korea’s Ministry of Land, Infrastructure and Transport (MOLIT), met with the CEOs of nine domestic low-cost carriers, including Jeju Air, T’way Air, Eastar Jet and Jin Air. During the meeting, the minister presented plans for stricter safety standards.

Authorities have suggested that migratory bird strikes were the cause of last month's deadly plane crash in South Korea, according to multiple reports.

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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,

A preliminary investigation report released on Monday revealed that feathers and blood stains from birds were found in both engines of the Boeing 737-800 which crashed on 29 December, killing 179 of the 181 passengers and crew members onboard.