Controllers would notify their supervisors, who in turn would inform management all the way up to FAA headquarters in Washington.
( Controllers ( ( would ( notify ( ( ( their supervisors ) , ) ( who ( ( in turn ) ( would ( ( inform management ) ( ( ( all ( the way ) ) up ) ( to ( ( FAA headquarters ) ( in Washington ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Controllers)) (VP (MD would) (VP (VB notify) (NP (NP (PRP$ their) (NNS supervisors)) (, ,) (SBAR (WHNP (WP who)) (S (PP (IN in) (NP (NN turn))) (VP (MD would) (VP (VB inform) (NP (NN management)) (PP (ADVP (NP (PDT all) (DT the) (NN way)) (RB up)) (TO to) (NP (NP (NNP FAA) (NNS headquarters)) (PP (IN in) (NP (NNP Washington)))))))))))) (. .)))
The controllers wouldn't notify their managers and the managers wouldn't notify the FAA.
( ( ( ( ( The controllers ) ( ( would n't ) ( notify ( their managers ) ) ) ) and ) ( ( the managers ) ( ( would n't ) ( notify ( the FAA ) ) ) ) ) . )
(ROOT (S (S (NP (DT The) (NNS controllers)) (VP (MD would) (RB n't) (VP (VB notify) (NP (PRP$ their) (NNS managers))))) (CC and) (S (NP (DT the) (NNS managers)) (VP (MD would) (RB n't) (VP (VB notify) (NP (DT the) (NNP FAA))))) (. .)))