For GE9X, Bigger Is Better Preparing for the first test of the world’s largest engine—GE9X—requires big equipment and investments at GE Aviation Peebles Ohio facility. Tags bellmouth Combustor Compressor FETT GE Aviation GE Aviation Peebles GE Peebles GE9X jet engine jet engine testing OH Peebles TAPS III Testing Read more about For GE9X, Bigger Is Better