13 dead in UPS crash and 9 remain missing as officials examine black box data

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.

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 aircraft was last reported at 475 feet of altitude, traveling at a speed of 183 knots around 5:13 p.m., officials said on Thursday.

The plane had been in San Antonio for about six weeks before Tuesday's flight and officials said they are looking into maintenance records from its time in Texas.

They are also reviewing CCTV information from the field surrounding the crash. Investigators have already pulled multiple pieces of engine fan blades along with the main component of the engine strewn across the debris field.