(S (S (PP (IN In) (BASENP (NN 2006))) (S (BASENP (DT another) (NNP B737)) (VP (VP (VP (VBD suffered) (BASENP (DT a) (JJ navigational) (NN problem))) (CC and) (VP (VBD flew) (PP (IN into) (BASENP (DT a) (NN radar) (NN blackspot))))) (COMMA ,) (S (VP (VBG leaving) (S (BASENP (PRP it)) (VP (VP (VBN lost) (PP (IN for) (BASENP (JJ several) (NNS hours)))) (PP (IN before) (S (VP (VP (VBG performing) (BASENP (DT an) (JJ emergency) (NN landing))) (NP (NP (BASENP (NNS hundreds)) (PP (IN of) (BASENP (NNS miles)))) (PP (IN from) (BASENP (DT the) (JJ intended) (NN destination)))))))))))))) (PERIOD .))