Data from the last four minutes of Jeju Air flight 2216, which crashed in Muan on December 29, were not recorded by the flight voice recorders (CVR) and data recorders (FDR), the National Transportation Safety Board (NTSB) has discovered, which transcribed the equipment.
The finding will make the investigation into the accident more complex, which has raised questions about the conditions of the aircraft during the emergency landing that the Boeing 737-800 crew made.
Apparently, without hydraulic systems, the aircraft was unable to lower its landing gear or extend its flaps. Unable to brake, the 737 overran the runway and crashed violently into a barrier after the threshold. Only two of the 181 occupants survived.
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According to local media, the recorders stopped working at 08:59 while the crash occurred at 09:03 (local time).
The two black boxes were sent to Washington, in the US, where the NTSB has a laboratory to extract the recordings. The work was carried out between the 7th and 11th.
Without the information from the aircraft, investigators will have to look at other evidence to determine the cause of the accident.
“The investigation involves analyzing various sources of information, including air traffic control records, video footage of the crash and debris from the site,” South Korean authorities said.
