Investigators are reviewing 63 hours of data collected from the black box of a UPS cargo plane involved in a deadly crash that killed at least 13 people in Louisville, Kentucky, earlier this week. Nine people remain missing as authorities sift through the wreckage of Tuesday's crash in an attempt to piece together what went wrong.

The UPS freighter that crashed in Louisville was a 34-year old jet. While that’s old for a passenger plane, that’s not so unusual in the world of air cargo.

At least 12 people are dead and several people are injured after a catastrophic plane crash near Louisville Airport.

On social media, Louisville Metro Police (LMPD) said multiple agencies are responding to a reported plane crash near the area. Grade Lane is expected to be closed indefinitely between Stooge and Crittenden. Injuries are reported and the scene remains active with fire and debris, according to LMPD. The public is advised to avoid the area.

A team of investigators arrived in Louisville, Kentucky, Wednesday to look into what led to the fiery crash of a UPS cargo plane shortly after it took off from the Louisville airport Tuesday, killing at least 13 people and destroying businesses and other structures in the area.

Air India crash survivor battles severe PTSD after losing brother in tragic Boeing accident. Viswashkumar Ramesh struggles with mental health, physical injuries.

The UPS plane was departing for Honolulu from the Louisville Muhammad Ali International Airport when it crashed at about 5:15 p.m. local time Tuesday, authorities said. Video of the crash showed flames on one of the plane's wings,