Just before 8:14, it had climbed to 26,000 feet, not quite its initial assigned cruising altitude of 29,000 feet.
( ( Just ( before 8:14 ) ) ( , ( it ( ( had ( climbed ( to ( ( ( ( ( 26,000 feet ) , ) not ) quite ) ( ( its ( initial ( assigned ( cruising altitude ) ) ) ) ( of ( 29,000 feet ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (RB Just) (IN before) (NP (CD 8:14))) (, ,) (NP (PRP it)) (VP (VBD had) (VP (VBN climbed) (PP (TO to) (NP (NP (CD 26,000) (NNS feet)) (, ,) (RB not) (RB quite) (NP (NP (PRP$ its) (JJ initial) (VBN assigned) (NN cruising) (NN altitude)) (PP (IN of) (NP (CD 29,000) (NNS feet)))))))) (. .)))
It climbed to 30,000 feet by 8:13.
( It ( ( ( climbed ( to ( 30,000 feet ) ) ) ( by 8:13 ) ) . ) )
(ROOT (S (NP (PRP It)) (VP (VBD climbed) (PP (TO to) (NP (CD 30,000) (NNS feet))) (PP (IN by) (NP (CD 8:13)))) (. .)))