 The fuselage, of similar cross-section to that of the P-3, was lengthened by 2.40 m (8 ft), and the wingspan by 2.10 m (7 ft).The wing center section was increased in length, which moved the engines farther away from the fuselage to reduce noise levels in the cabin.The tailplane was increased by about 25% in area, but shortened in height compared to that of the P-3.