the bn2 (britten norman) has no VMCA, it stalls before VMCA.
VMCA is a speed calculated at the max weight with full back CG.
if you fly "light" at high altitude, you will certainly stall first with one engine.
to go out of Vmca, and it surprise me a lot, apparently no one knows that it's possible to reach Vmca and even go to a lower speed. you just have to put both(or the remaining) throttle on idle or at low power when u start to loose control of your aircraft(Vmca demo), pitch down slowly to Vyse (blue line)and add power and continue your flight at this speed or higher. So what is this blue line(Vyse)?, it's the speed where you have max lift and min drag on one engine, or you can call it best range speed for 1 engine.
so now, why Vmca is dangerous, not because you could loose the control if you keep high power on one engine and your speed start to blow out due to high pitch angle, but when engine failure occurs right after take-off, push this yoke to blue line(Vyse) immediately and apply rudder to keep the nose straight (dead leg, dead engine)and apply full power from right to left(mixture, rpm, and trottle), then identify, verify, feather and check list...
everyyear, there are crashes of planes hitting ground just after take off .mainly due to a poor technic and mainly due to the fact that the pilot want absolutely come back to the runway after engine failure. In hot weather at high pressure altitude, the plane deliver 50% of power, but due to "non centered line thrust" you have only 20 or 30% thrust. after engine failure, when you fly back to Vyse (blueline), it's possible you have a negative rate of descent, if you turn, it will be worse. better to go straight, burn fuel or go land to a runways staight in front of you. Declare an emergency anyway and apply the procedures given by your flight instructor!!