(S (S (BASENP (PRPD His) (NN case)) (VP (VBZ is) (VP (VP (VBN considered) (BASENP (DT a) (NN landmark))) (COMMA ,) (PP (IN with) (S (BASENP (NN aviation) (NNS groups)) (VP (VBG believing) (SBAR (S (BASENP (PRPD his) (NN trial)) (VP (MD may) (VP (VP (VB set) (BASENP (DT the) (NN precedent))) (PP (IN for) (NP (BASENP (NNS pilots)) (VP (VBN involved) (PP (IN in) (BASENP (JJ future) (NNS accidents)))))))))))))))) (PERIOD .))