South Korea released a preliminary report into last month’s deadly Jeju Air Co. crash that offers more detail on the role of bird strikes in the disaster, while still leaving crucial questions unanswered.

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

The investigation into the deadliest air disaster on the country's soil remains ongoing, focusing on the role of bird strike and involving an analysis of the engines and the "localizer" landing guidance structure.

Reuters, the news and media division of Thomson Reuters, is the world’s largest multimedia news provider, reaching billions of people worldwide every day. Reuters provides business, financial, national and international news to professionals via desktop terminals, the world's media organizations, industry events and directly to consumers.

South Korean authorities have submitted their preliminary findings on the Jeju Air crash that killed 179 people to the International Civil Aviation Organization (ICAO) and aviation authorities in the United States,

The nation’s transport ministry reviewed structures near airport runways after the deadly crash of a Jeju Air flight late last month.

South Korea has submitted an initial report on last month's Jeju Air crash to the U.N. Aviation Agency, focusing on a potential bird strike and structural factors. The Boeing 737-800 crashed during an emergency landing,

South Korea plans to enhance its regulation of domestic low-cost carriers and impose strict penalties on those that do not comply with new safety standards, Yonhap News Agency reported. On Park Sang-woo,

South Korea will release by Monday a preliminary report on last month's Jeju Air plane crash that killed 179 people, the deadliest air disaster on the nation's soil, the transport ministry said on Saturday.