However, the simultaneous loss of radio and transponder signal would be a rare and alarming occurrence, and would normally indicate a catastrophic system failure or an aircraft crash.
( However ( , ( ( ( the ( simultaneous loss ) ) ( of ( radio ( and ( transponder signal ) ) ) ) ) ( ( ( ( ( would ( be ( a ( ( ( rare and ) alarming ) occurrence ) ) ) ) , ) and ) ( ( would normally ) ( indicate ( ( ( a ( catastrophic ( system failure ) ) ) or ) ( an ( aircraft crash ) ) ) ) ) ) . ) ) ) )
(ROOT (S (ADVP (RB However)) (, ,) (NP (NP (DT the) (JJ simultaneous) (NN loss)) (PP (IN of) (NP (NN radio) (CC and) (NN transponder) (NN signal)))) (VP (VP (MD would) (VP (VB be) (NP (DT a) (ADJP (JJ rare) (CC and) (JJ alarming)) (NN occurrence)))) (, ,) (CC and) (VP (MD would) (ADVP (RB normally)) (VP (VB indicate) (NP (NP (DT a) (JJ catastrophic) (NN system) (NN failure)) (CC or) (NP (DT an) (NN aircraft) (NN crash)))))) (. .)))
Losing signal of radio and transponder is rare and seems shows a potential crash.
( ( ( ( Losing signal ) ( of ( ( radio and ) transponder ) ) ) ( ( ( is rare ) and ) seems ) ) ( ( shows ( a ( potential crash ) ) ) . ) )
(ROOT (SINV (S (NP (NP (VBG Losing) (NN signal)) (PP (IN of) (NP (NN radio) (CC and) (NN transponder)))) (VP (VP (VBZ is) (ADJP (JJ rare))) (CC and) (VP (VBZ seems)))) (VP (VBZ shows)) (NP (DT a) (JJ potential) (NN crash)) (. .)))