how to trigger Go-around mode A320
it was on the sim last week. after taking off with one engine on fire, i maintained the runway heading with thrust at MCT detent. everything was ok since it was leveled off at 1500 AGL, then i tried to retract the flap, but the accelerating was slow. then i decided to forward the thrust to TOGA. Strange thing happaned , i triggered the GA mode. FMA displayed TOGA, SRS GA TACK.
Could anyone tell me, the reasons for this? i was on runway heading, it should not happen.