In a surprise ruling in one of the most high-profile disasters in aviation history, a French appeals court Thursday overturned manslaughter convictions against Continental Airlines and a mechanic for the 2000 crash of an Air France Concorde that killed 113 people.

The crash hastened the end for the already-faltering supersonic Concorde, synonymous with high-tech luxury but a commercial failure. The program, jointly operated by Air France and British Airways, was taken out of service in 2003.