
First flight came only two weeks after United Aircraft subsidiary Irkut announced first taxi tests at its Irkutsk airfield and nearly a year after the airplane’s rollout in the Siberian city last June 8. At the time, officials eyed Russian certification in 2018, although earlier plans to fly the airplane by the end of last year were dashed. During the rollout ceremony Russian prime minister Dmitry Medvedev referenced plans for first flight “within a year,” and UAC officials acknowledged that the previously quoted target might prove too optimistic. A UAC spokesman told AIN February 2017 appeared more realistic, but since then virtually all went quiet at Irkut, until this month’s taxi tests.
Powered by Pratt & Whitney PW1400G geared turbofans, the MC-21 features the widest fuselage of any narrowbody on the market, promising cabin comfort for full-service airlines and cost advantages for low-fare carriers, according to UAC and Irkut. The MC-21’s list price of $91 million suggests a 15 percent lower acquisition cost than that of the current A320.
Irkut claims that either the PW1400G or a Russian engine alternative—namely, the Aviadvigatel PD-14 now undergoing a second round of testing aboard an Ilyushin Il-76 flying testbed—will produce a 12- to 15 percent operating cost advantage over the current Airbus A320. Apart from the engines, the MC-21’s most radical advance centers on its carbon fiber wings, which take the airplane’s composite content to 30 percent. AeroComposit in Ulyanovsk, Russia, builds the wings using an out-of-autoclave resin transfer infusion process never before tried on a commercial aircraft. Both Airbus and Boeing use a more expensive process that requires an autoclave to cure their composite wings on the A350 and 787, respectively. Both of the MC-21’s chief competitors—the Boeing 737 Max and Airbus A320—use metal wings.
While UAC’s definitive plans call for that innovation to extend to the smaller, 150-seat MC-21-200, Slyusar suggested it has seriously revisited prospects for a larger version airplane in the form of the MC-21-400. At the time of the rollout, Slyusar said discussions on the larger variant could start in 2017, but that any decision would depend on what competition ultimately exists in the segment of the market the MC-21 would occupy, or the so-called “Middle of the Market (MOM).”