The jetliner was carrying 126 people and caught fire after landing at Miami International Airport on Tuesday.
“The plane did what it was told to do by someone in the cockpit,” a person with knowledge of the officials' preliminary findings told The Wall Street Journal.
Sunday's discovery may shed light on why the Boeing 737-800, carrying 132 people, nosedived into a remote mountainous area last week.
The exterior of the black box recorder was so damaged that investigators could not immediately conclude whether it was the flight data recorder or the cockpit voice recorder.
More than seven hours after communication was lost with the plane, there was still no word of survivors.
At least one body has been found but search teams are still looking for the other passengers.
José Ángel Hernández, better known as “Flow La Movie,” produced songs such as “Te Boté" for artists Bad Bunny and Ozuna.
The U.S. Coast Guard rescued both crew members.
Actor Joe Lara, who played Tarzan in the television series "Tarzan: The Epic Adventures," has died in a plane crash near Nashville.
Officials believe they have identified the location of the flight data recorder and cockpit voice recorder, one day after the passenger plane carrying 62 people crashed.