It has ground maneuvering cameras for taxiing and a tailskid to rotate, while the proposed MTOW -300X would have needed a semi-levered main gear. Its overwing fuselage section 44 was strengthened, with its skin thickness going from the -200's , and received a new evacuation door pair. Its operating empty weight with Rolls-Royce engines in typical tri-class layout is compared to for a similarly configured -200. Boeing wanted to deliver 170 -300s by 2006 and to produce 28 per year by 2002, to replace early Boeing 747s, burning one-third less fuel with 40% lower maintenance costs.