Expert "If the black box is not saved, there is a possibility of shutdown."

Regarding the fact that records were not stored in the black box of the Jeju Air plane for the last four minutes, aircraft experts analyzed that the records may have been cut off when both engines failed after the plane collided with a current, leaving the aircraft in a power shutdown.

Kim Kwang-il, a professor of aviation operations at Silla University, said it is very rare, but it is believed that the generator stopped and both the cockpit and flight data recorders were cut off as both engines failed to operate.

Jeong Yoon-sik, a professor of aviation operations at Catholic Kwandong University, also interpreted that the collective suspension of data storage four minutes before the accident is likely an electrical defect.

Professor Chung went on to reveal the exact cause of the suspension of data storage and said that the accident investigation period could be a little longer as it goes through cross-verification with other data.

In the past, domestic airline plane accidents took 11 months at the earliest or years at the longest to announce the results of the investigation.