What was found
WHILE 4.3 HOURS INTO A CONOP, THE CREW HAD JUST TAKEN OFF ENROUTE. WHILE TRANSITIONING TO FORWARD FLIGHT AT APPROXIMATELY 75 FT, THE CREW FELT THE ACFT YAW LT, HEARD A DECREASE IN ENGINE NOISE AND EXPERIENCED A LOSS OF AVAILABLE POWER. THE ACFT WAS STILL POSITIONED OVER THE TAXIWAY AND WAS ABLE TO REDUCE POWER AND PERFORMED AN UNEVENTFUL RUN ON LANDING. ACFT SHUTDOWN WAS REPORTED TO BE NORMAL. THE NR 2 ENGINE, SN 295-109C WAS REMOVED AND A SERVICEABLE, ENGINE, PN CT58-140-2, SN GE-E-285-238C WAS INSTALLED. PERFORMED LEAK CHECKS WITH NO LEAKS NOTED. ALL MAINTENANCE PERFORMED IAW MM, CH 71.