The colorful Northwest Boeing 747-200 seen on its way from Jeju Intl. to Hong Kong Chep Lap Kok on ES.
Some info about N638US, the aircraft shown here:
Model : 747-230B
Delivered : 1986 to NWA as new
Seats : 430, configuration F30Y400
Engines : 4 Pratt&Whitney JT9D-7R4G2, Thrust 4x 54,750 lb
Range : 6758 Nautical Miles/ 12700 km/ 7900 Statute Miles
Speed : Cruise speed Mach .84/ 555 Mph at 35,000 ft
Max take : 833,000 lbs/ 374,850 Kg
off weight
Max Fuel : 52,410 US Gal./ 199,158 Litres