Flight information and cockpit dependable recorders from the South Korean rider level that crashed past period stopped signaling 4 minutes earlier the disaster, the country's transport ministry has said.
The clang of the Jeju Air formation killed 179 people, making it the deadliest aerial mishap connected Korean soil. Two compartment unit members were the lone survivors.
Investigators had hoped that information connected the recorders would supply insights astir the important moments earlier the tragedy.
The ministry said it would analyse what caused the "black boxes" to halt recording.
The recorders were primitively examined successful South Korea, the ministry said.
When the information was recovered to beryllium missing, they were taken to the US and analysed by American information regulators.
The level was travelling from Bangkok connected 29 December erstwhile it crash-landed astatine Muan International Airport and slid into a partition disconnected the extremity of the runway, bursting into flames.
Sim Jai-dong, a erstwhile transport ministry mishap investigator, told Reuters quality bureau that the nonaccomplishment of information from the important last minutes was astonishing and suggested that each power, including back-up, could person been cut.
Many questions stay unanswered. Investigators person been looking astatine the relation that a vertebrate strike oregon upwind conditions whitethorn person played.
They person besides focused connected wherefore the Boeing 737-800 did not person its landing cogwheel down erstwhile it deed the runway.