What is MC-21?
The amazing livery is made by my friend MIG31FoxhoundBM
(He seemed to make the wrong Russian Flag, you can just download this because I updated xml. So sorry.)
The picture is taken by my friend Kaqiusha321.

Credit to PlanariaLab for the HUD

Variants
MC-21 Empty(1383p)
MC-21 Full interior(2286p)
MC-21 Cargo(1203p)
MC-21 Livery and interior modified by MIG31FoxhoundBM(2507p)

HOW TO FLY IT:
Start up
1.Turn on the battery on the overhead panel
2.Turn on the APU fuel pump and APU bleed, then turn on the APU.
3.Once the APU is on, you can turn on the engines' fuel pumps and bleeds, then turn on the engine. Engines can only provide thrust when the N1 and EGT indicator begin to rotate.
4.You can turn off the APU when the engines are on.
5.Don't forget to turn on the hydrualics, or the control surfaces and landing gears won't move.
(You can also turn on the ground power instead of battery if you just want to stay on ground.)

Takeoff
1.The engines are powerful. If you use the maximum throttle for taking off, the nose will lift up from the ground.
2.Lower the flaps if you want.
3.Use yaw and the handle beside the joystick to turn.
4.Rotate at about 280km/h(174mph, 151kn)
5.Retract the landing gears.

Cruise
The aircraft has no autopilot system because I can't make it. Just level the airplane and let it fly.

Landing
1.Decrease the throttle, and use the air brakes to slow down.
2.Lower the flaps if you want.
3.The number on the right side of the horizon on the screen indicates altitude in feet and vertical speed in feet per minute, the left side indicates IAS in knots. Try to make soft landings.
4.Touchdown at about 280km/h(174mph, 151kn).
5.AG1 is for thrust reversers.

Emergency
1.Push the red buttons on the overhead panel when the engines catched fire or damaged. Once the button is pushed, you can't re-start the engine.
2.If both of your engines are damaged and you pressed the buttons, all the screens will go off and the hydraulics will be disabled. You can turn on the RAT(between the two hydraulics buttons) and then turn on the hydraulics so that you can fly it as a glider. Find a nearest airport to land and restart on the ground.(The RAT is actually on the right side of the root of the wing, I made a mistake.)
3.The RAT will be disabled when the IAS is lower than 198km/h(123mph,107kn).

Others
1.The cockpit door, cabin doors and cargo doors can be opened. The status of the doors is indicated on the screen.
2.The part of windshield can also be opened.
3.HUD can be used for landing in no-wind weathers.
4.You can turn on the exterior lights when flying if you want.
5.You can turn on the wipers in rainy weathers.

NOTICE:
You are not able to press some buttons unless you follow the steps.

Cockpit interior for reference




(The parking brake also activates airbrakes)