South Korean police raided the offices of Jeju Air and the operator of Muan International Airport Thursday, as the investigation into the deadly Dec. 29 plane crash that killed 179 people ramped up.

The flight was carrying 181 passengers and crew when it belly-landed before slamming into a barrier, killing all aboard except two flight attendants.

The Jeju Air crash in South Korea is an outlier in a country considered to be a gold standard for airline safety.

Ultimately, the plane crashed, killing 179 people in South Korea’s worst aviation disaster. A standard pre-flight inspection found “no issues” with the Jeju Air passenger plane before it crashed.

A South Korean Jeju Air passenger jet crashed on landing at Muan International Airport on Sunday, killing 179 people in the country's deadliest air disaster.

South Korean investigators probing a Jeju Air crash which killed 179 people in the worst aviation disaster on its soil said Wednesday they will send one of the retrieved black boxes to the United States for analysis.

A Jeju Air Boeing 737-800 skidded down the runway and crashed in a fireball in South Korea, and investigators are just beginning the process of figuring out why.

South Korean police raided Jeju Air and the operator of the Muan airport as they ramped up their investigation into Sunday’s catastrophic plane crash that claimed 179 lives, marking the worst aviation disaster in the country’s recent history.

The exact cause of the Boeing 737-800 crash is still unknown, but investigators have pointed to a bird strike, faulty landing gear and the runway barrier as possible issues.

Jeju Air’s passenger plane smashed into a concrete wall after an emergency landing at Muan international airport in South Korea

South Korean police on Thursday raided the offices of Jeju Air and the operator of Muan International Airport as part of the probe into the fatal crash of a Boeing