FCU Sys Malfunction
Reference the Q-meter accompanied by a large decay in T5 and Nf for the FCU malfunction. An eng Stall is usually a rise in T5 and hung up Ng with rumble, vibs or popping. A Flame out will be an indication that all eng insturments decay. If not Eng Mal was noticed, perform an Eng Restart. If an Overspeed is indicated, retard SCL to 100% Nf or if this does nothing raise the collect to droop the rotor. If this doesn't assist with Nf control secure the affected engine and restart if it was a momentary FCU malfunction.