(S (S (S (BASENP (DT The) (NN plane)) (VP (VP (VP (VBD took) (PRT (RP off))) (PP (IN at) (NP (BASENP (NN 1:12) (NN a.m.)) (BASENP (JJ local) (NN time))))) (CC and) (VP (VBD was) (VP (VP (VBG traveling) (PP (IN from) (BASENP (NNP Moscow)))) (PP (TO to) (BASENP (NNP Perm))))))) (SBAR (WHADVP (WRB when)) (S (NP (BASENP (NNS officials)) (PP (IN at) (BASENP (DT the) (NNP Bolshoye) (NNP Savino) (NNP Airport)))) (VP (VP (VBD lost) (NP (BASENP (NN contact)) (PP (IN with) (BASENP (DT the) (NN aircraft))))) (PP (IN at) (NP (BASENP (QP (RB about) (NN 1,800)) (NNS meters)) (PP (IN in) (BASENP (NN altitude))))))))) (PERIOD .))