The pilots of the flight from Miami to Colombia in December 1995 entered an incorrect code into the flight computer, causing the Boeing 757 to fly into a mountainside. Four people survived the crash.
The Airline company previously paid $300 million to the crash victims and their families. It brought legal action against Jeppensen Sanderson, a Colorado software company, and Honeywell Air Transport Systems, a computer manufacturer based in Phoenix to recover its costs.
The jury found the software company 17% to blame and the computer manufacturer 7% at fault. American Airlines was considered 75% at fault.
Damages have still to be determined.