A Paris appeals court found Air France and Airbus guilty of manslaughter in the 2009 Flight 447 crash, resulting in mixed reactions from victims' families. Both companies intend to appeal the verdict, which could extend the legal proceedings.

The Brazilian head of a victims’ association for the 2009 crash of Flight 447 from Rio to Paris said that justice has yet to be served in France’s worst aviation crash after a Paris appeals court found Airbus and Air France guilty of manslaughter. Air France and Airbus, two of France’s most emblematic companies, said in separate statements that they would appeal Thursday’s ruling, potentially prolonging the legal battle for years. Brazilian Nelson Faria Marinho, who lost his son in the crash...