The families of two US citizens killed in the Air France crash are suing the airline and plane manufacturer Airbus for negligence.
The case has been filed with a court in Houston, Texas.
The families of Michael and Anne Harris believe that the air speed monitors and radar equipment known as pitots on the Airbus 330-200 were partly to blame for the crash.
Flight AF 447 crashed on 31 May 31 in waters off Brazil after taking off from Rio de Janeiro bound for Paris. All 228 people on board were killed.
Three Irish doctors, Jane Deasy, Eithne Walls and Aisling Butler, were among those killed in the crash.
The cause of the accident has not been confirmed and the flight recorders are still missing.
Air France has not commented on the case.
Since the crash, International air safety agencies have ordered airlines to replace older pitot probes and those made by the Thales with newer versions made by the US manufacturer Goodrich.
French investigators have said it could take up to 18 months to wrap up their probe into the mysterious crash.
