Cause of South Korean plane crash unclear as officials focus on bird strikes

The investigation into the cause of the Jeju Air plane crash is ongoing, with US transportation authorities assisting South Korea's probe. The most likely explanation for the crash is a bird strike, but experts have questioned this theory due to the severity of the incident, which involved a fire and extensive damage. The National Transportation Safety Board (NTSB), Federal Aviation Administration (FAA) and Boeing, the manufacturer of the aircraft, are all involved in the investigation.