What was found
DURING TAKEOFF, LEFT ENGINE ITT WAS IN YELLOW RANGE. DURING CLIMB ITT HAD A 877 FT RED EXCURSION FOR ABOUT 2 SEC. ICING CONDITIONS WERE ENCOUNTERED AND ITT WENT RED 888 FT WITH N21 PERCENT HIGHER THAN RIGHT, FUEL FLOWS 90 LBS HIGHER. ABOUT 3 TO 4 SECONDS, LEFT ENGINE ROLLED VIBRATED AND ROLLED BACK WITH SMOKE IN THE CABIN. SEVERE DAMAGE, QRH PERFORMED. C/W ENGINE CHANGE PER RII 71-401.