JC Wings 1:400 McDonnell Douglas MD-81 N980DC Diecast Model1: 400 Diecast: McDonnell Douglas MD 81 N980DC "GE36 UHB Demonstrator" (JC Wings XX40181) N980DC is manufacturer serial number 48000, line number 909 the prototype McDonnell Douglas MD 80 series airframe, first flown on 18 October 1979. After serving as the type's engineering testbed, the airframe was modified to become the flying demonstrator for the General Electric GE36 Ultra High Bypass (UHB) open rotor engine, a joint GESNECMA program