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.
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