(S (S (BASENP (DT A) (NNP Civil) (NNP Aviation) (NNP Authority) (NN spokesperson)) (VP (VBD stated) (SBAR (IN that) (S (BASENP (DT the) (NN incident)) (VP (VP (VBZ does) (RB not)) (VP (VP (VB cast) (BASENP (DT any) (NN doubt))) (PP (IN on) (NP (BASENP (DT the) (NN airworthiness)) (PP (IN of) (NP (BASENP (DT the) (NNP A320) (NN design)) (COMMA ,) (NP (BASENP (DT a) (JJ popular) (NN aircraft)) (SBAR (WHNP (WDT which)) (S (VP (VBZ has) (VP (VBN been) (VP (VP (VBN involved) (PP (IN in) (BASENP (QP (RB only) (NN ten)) (JJ fatal) (NNS accidents)))) (PP (IN since) (NP (BASENP (PRPD its) (NN introduction)) (PP (IN in) (BASENP (NN 1987))))))))))))))))))))) (PERIOD .))