What was found
SEA - APPROXIMATELY 2 MINUTES AFTER TAKEOFF NR 2 ENGINE TORQUE SPIKED INTO YELLOW AND THEN BACK TO NORM. HAPPENED TWICE. NO FAULT CODES LOGGED IN CDS PERFORMED EMU DOWNLOAD IAW AMM TASK 77-31-01-470-801. PER TECH SERVICES REMOVED AND REPLACED NR 2 FADEC IAW AMM TASK 73-21-01-000-801 AND 73-21-01-400-801. PERFORMED PCU INSTALLATION RUNS IAW TC 6710008 PERFORMED POWER ASSURANCE CHECK IAW MTC 6710005 ALL CHECKS GOOD. NR 2 FADEC REPLACED AS A PRECAUTIONARY MEASURE. RETURNED TO SERVICE.