What was found
A/C INVOLVED IN AERIAL GRAPPLE LOGGING OPS ON DOWN WIND APPROACH TO LOG LANDING WITH A 15,000 LB SINGLE LOG LOAD. PILOT REDUCED POWER TO 30% TQ. UPON ACTION CREW HEARD SOUND OF ENG SPOOLING DOWN FOLLOWED BY LOW RPM AUDIO WARNING HORN & ILLUM OF WARNING LIGHT. ONCE PILOT ABLE TO SAFELY RELEASE LOAD, CONFIRMED WHAT CO-PILOT HAD IDENTIFIED AS CORRECT ENG. PULLED NR 2 ENG THROTTLE BACK TO CUT-OFF & ENGAGED STARTER TO COOL DOWN T5 TEMP. ENG COOLED DOWN, MADE A SINGLE ENG LANDING. AFTER SHUTDOWN A CHECK OF T5 RECORDING SYS IND AN ENG TEMP OF 767 DEGREES C WAS REACHED FOR 3 SEC. ENG REMOVED & RETURNED TO OPERATOR FOR HOT SECTION INSP. AFTER COMPLETE GROUND CHECK OUT A/C RELEASED FOR RETURN TO SERVICE.