The MCA-402 is a commercial airliner built By Merîkan. It's one of the largest airliners, hell, aircraft ever built by Merîkan, only being beaten out by the MIB-35. And like the MIB-35, it uses an 8-engine configuration, though this one is only a monowing, and with a bottom wing design. It's capable of carrying a maximum of around 750 or so passengers, and it only has a class called "Economy+", which is basically economy class but with some needed quality of life improvement, which is necessary for the super long range travel it partakes in, mostly flying between routes like "Brelin-Rhistaka", "CamCity-Rhistaka", "AntiRhistaka-Rhistaka" and "MoneyTown-Brelin" These are some of the longest routes (between capitals) in the Duo World.

It also has some military uses, mainly with the MCA-402 TRNS, a heavy transport aircraft that was used in the later stages of DWW3 to carry heavy weaponary from distant production places to front lines or weapons sites (For example, shells for he Rhistaka artillery Railguns were mostly built in Camania, and were transported to Rhistaka by MCA-402 TRNSs). There's also the rarely seen MCA-402 CTRL, which is apparently a brand new wide-area-control AWACS, or maybe even a remote drone operation hub.