The lawsuit filed Tuesday in Cook County Circuit Court alleges the aircraft's electronics system prevented the operation of a switch at a critical moment. More than a dozen passengers involved in the lawsuit claim the system didn't provide any warning to the crew that the switch wasn't working.
The Emirates Boeing 777-300 flying from India crash- landed in Dubai, United Arab Emirates.
All 300 people aboard survived, scrambling down emergency slides before flames destroyed the plane. A firefighter was killed battling the blaze.
A spokesman for Boeing declined to comment on the lawsuit, noting the litigation is pending.