Air China Boeing 747-4J6 (M) B-2470, is ready for take-off. The crew of the Boeing widebody, in this case powered by four Pratt & Withney 4056, will very soon release the brakes and take off with a maximum of 385554 kilograms. The "M" is an alternate designation for combi, featuring a rear fuselage port side freight door and provision for palletised loads. This airliner was delivered to Air China in October 1998.