 Once all outstanding CSM @-@ 012 hardware problems were fixed , the reassembled spacecraft finally completed a successful altitude chamber test with Schirra 's backup crew on December 30 . According to the final report of the accident investigation board , " At the post @-@ test debriefing the backup flight crew expressed their satisfaction with the condition and performance of the spacecraft . " This would appear to contradict the account given in Lost Moon : The Perilous Voyage of Apollo 13 by Jeffrey Kluger and astronaut James Lovell , that " When the trio climbed out of the ship , … Schirra made it clear that he was not pleased with what he had seen , " and that he later warned Grissom and Shea that " there 's nothing wrong with this ship that I can point to , but it just makes me uncomfortable . Something about it just doesn 't ring right , " and that Grissom should get out at the first sign of trouble . 
