After analyzing the devices, the U.S. National Transportation Safety Board concluded​ that both the flight data and cockpit voice recorders stopped working about four minutes before the crash.

The plane skidded off a runway at Muan International Airport and caught fire after crashing, a fire official said.

Authorities investigating the deadly JeJu Air plane crash that claimed 179 lives in South Korea are reporting that the plane’s black boxes stopped recording about four minutes before the aircraft ultimately collided with a concrete structure after landing.

Bird feathers have been found in an engine recovered from the site of the deadly Jeju Air flight which crashed-landedand killed 179 people in South Korea, investigators said. The Boeing 737 -800 skidded off a runway at Muan International Airport and hit a concrete fence, bursting into flames, on 29 December.

A former transport ministry accident investigator said the discovery suggests all power, including backup, may have been cut, which is rare.

Only two people were rescued and 179 people died in the plane crash on Sunday morning at the international airport in the city of Muan in southwestern South Korea. All bodies have been recovered. Source: South Korean news agency Yonhap,