NG 1:400 Series The NG "1:400" range presents higly-detailed, ready-made diecast models of civilian aircraft in 1:400 scale. China Southern Airlines, B-1700. NG 1:400 Series 58120. Boeing 737-800 Designed as a smaller, short-ranged alternative to the Boeing 707 and 727, the 737 was first flown on April 9th, 1967.
