When the A320 was created, it was the first narrow-body Aeroplan to incorporate a considerable number of composite materials.This aircraft outperforms both the Boeing 737 and the Boeing 717, as measured by their respective external cabin diameters: 3.95 meres (12 feet 11.5 inches) for the Boeing 737 and 3.34 meters (12 feet 10 inches) for the Boeing 717.(10 feet 11.6 inches).