What was found
A/C INVOLVED IN HELI-LOGGING OPS WITH A/C IN HOVER MADE A MODERATE PWR REDUCTION TO REPOSITION GRAPPLE ON A LOG. AS PWR WAS REDUCED A "WHOOSH" SOUND WAS HEARD AND N1 WARNING HORN ACTIVATED FOR NR 2 ENG. FLT CREW IDENTIFIED AND CONFIRMED THAT NR 2 ENG ENCOUNTERING A ROLL-BACK AND PROCEEDED TO SHUT ENG DOWN TO COUNTER RISING ENG T5 TEMP. WITH ENG SECURED AND NR T5 TEMP LIMITS EXCEEDED FLT CREW ELECTED TO RESTART NR 2 ENG SINCE A/C HAD 15 KILOMETER FERRY FLT BACK TO ITS SERV LANDING. ENG WAS SUCCESSFULLY RESTARTED AND A/C RETURNED TO SERV LANDING W/O FURTHER INCIDENT. A COMPLETE INSPECTION OF ENG AND RELATED LINKAGES REVEALED NOTHING ABNORM. ENG FUEL FILTER WAS INSPECTED FOR CONTAM WITH NO FAULT FOUND. AS STA