Starting tit high more than 850'c of T56-A-7b Eng, ie, we can't go upto 60%rpm just 40%rpm we get 850'c tit and its not cut back tit will go up and up . We already chanch TD valve adjust Fcu,TD AMPS clalibared, blade angle ck its ok. thermocopple and harnes chanch, bleed valve ck its ok. Fuel nozzle chanch,try to start the eng in null position but problem is same. Can anybody help me quickly pl. After fcu change tit was 850 i e more than 20 above from normal rating. "Thanks to all we just over come the problem.