The wide body growth is what seems to have driven LAX to go so junior. 55 777 As, 29 7ER As and 49 777 Bs had a cascading effect through the LAX list in both seats as people moved up the food chain. 73N A and 717 A only grew by 9 each, while the Bs for each look likely to have many openings to be filled with future new hire classes. Another driver of movement in LAX was the growth of the 7ER category in SEA.